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Finding the Fourth Proportional to 702,842.20, 969,918.16 and 380,545.64

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Solution

The fourth proportional to 702,842.20, 969,918.16 and 380,545.64 is: 525,150.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,842.20 : 969,918.16 = 380,545.64 : x
  2. Step 2: Convert to fraction form
    702,842.20/969,918.16 = 380,545.64/x
  3. Step 3: Cross multiply
    702,842.20x = 969,918.16 × 380,545.64
  4. Step 4: Simplify right side
    702,842.20x = 369,098,126,944.82
  5. Step 5: Solve for x
    x = 369,098,126,944.82/702,842.20
  6. Step 6: Final answer
    x = 525,150.78

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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.