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Finding the Fourth Proportional to 675,765.20, 932,463.72 and 403,775.60

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Solution

The fourth proportional to 675,765.20, 932,463.72 and 403,775.60 is: 557,155.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,765.20 : 932,463.72 = 403,775.60 : x
  2. Step 2: Convert to fraction form
    675,765.20/932,463.72 = 403,775.60/x
  3. Step 3: Cross multiply
    675,765.20x = 932,463.72 × 403,775.60
  4. Step 4: Simplify right side
    675,765.20x = 376,506,098,021.23
  5. Step 5: Solve for x
    x = 376,506,098,021.23/675,765.20
  6. Step 6: Final answer
    x = 557,155.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.