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Finding the Fourth Proportional to 716,806.16, 988,861.56 and 429,828.56

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Solution

The fourth proportional to 716,806.16, 988,861.56 and 429,828.56 is: 592,964.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,806.16 : 988,861.56 = 429,828.56 : x
  2. Step 2: Convert to fraction form
    716,806.16/988,861.56 = 429,828.56/x
  3. Step 3: Cross multiply
    716,806.16x = 988,861.56 × 429,828.56
  4. Step 4: Simplify right side
    716,806.16x = 425,040,940,374.15
  5. Step 5: Solve for x
    x = 425,040,940,374.15/716,806.16
  6. Step 6: Final answer
    x = 592,964.97

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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.