Home / 772,987.80-1,159,481.70-212,021.40

Finding the Fourth Proportional to 772,987.80, 1,159,481.70 and 212,021.40

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Solution

The fourth proportional to 772,987.80, 1,159,481.70 and 212,021.40 is: 318,032.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,987.80 : 1,159,481.70 = 212,021.40 : x
  2. Step 2: Convert to fraction form
    772,987.80/1,159,481.70 = 212,021.40/x
  3. Step 3: Cross multiply
    772,987.80x = 1,159,481.70 × 212,021.40
  4. Step 4: Simplify right side
    772,987.80x = 245,834,933,308.38
  5. Step 5: Solve for x
    x = 245,834,933,308.38/772,987.80
  6. Step 6: Final answer
    x = 318,032.10

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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.