Home / 1,020,020,687.70-1,530,031,031.55-611,873,999.70

Finding the Fourth Proportional to 1,020,020,687.70, 1,530,031,031.55 and 611,873,999.70

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Solution

The fourth proportional to 1,020,020,687.70, 1,530,031,031.55 and 611,873,999.70 is: 917,810,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,020,687.70 : 1,530,031,031.55 = 611,873,999.70 : x
  2. Step 2: Convert to fraction form
    1,020,020,687.70/1,530,031,031.55 = 611,873,999.70/x
  3. Step 3: Cross multiply
    1,020,020,687.70x = 1,530,031,031.55 × 611,873,999.70
  4. Step 4: Simplify right side
    1,020,020,687.70x = 936,186,206,939,615,488
  5. Step 5: Solve for x
    x = 936,186,206,939,615,488/1,020,020,687.70
  6. Step 6: Final answer
    x = 917,810,999.55

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.