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Finding the Fourth Proportional to 530,927.28, 732,680.64 and 316,074.78

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Solution

The fourth proportional to 530,927.28, 732,680.64 and 316,074.78 is: 436,183.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,927.28 : 732,680.64 = 316,074.78 : x
  2. Step 2: Convert to fraction form
    530,927.28/732,680.64 = 316,074.78/x
  3. Step 3: Cross multiply
    530,927.28x = 732,680.64 × 316,074.78
  4. Step 4: Simplify right side
    530,927.28x = 231,581,872,098.26
  5. Step 5: Solve for x
    x = 231,581,872,098.26/530,927.28
  6. Step 6: Final answer
    x = 436,183.79

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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.