Home / 725,976.90-1,088,965.35-621,000.90

Finding the Fourth Proportional to 725,976.90, 1,088,965.35 and 621,000.90

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Solution

The fourth proportional to 725,976.90, 1,088,965.35 and 621,000.90 is: 931,501.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,976.90 : 1,088,965.35 = 621,000.90 : x
  2. Step 2: Convert to fraction form
    725,976.90/1,088,965.35 = 621,000.90/x
  3. Step 3: Cross multiply
    725,976.90x = 1,088,965.35 × 621,000.90
  4. Step 4: Simplify right side
    725,976.90x = 676,248,462,418.82
  5. Step 5: Solve for x
    x = 676,248,462,418.82/725,976.90
  6. Step 6: Final answer
    x = 931,501.35

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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.