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Finding the Fourth Proportional to 716,474.56, 988,698.72 and 429,937.60

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Solution

The fourth proportional to 716,474.56, 988,698.72 and 429,937.60 is: 593,292.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,474.56 : 988,698.72 = 429,937.60 : x
  2. Step 2: Convert to fraction form
    716,474.56/988,698.72 = 429,937.60/x
  3. Step 3: Cross multiply
    716,474.56x = 988,698.72 × 429,937.60
  4. Step 4: Simplify right side
    716,474.56x = 425,078,754,799.87
  5. Step 5: Solve for x
    x = 425,078,754,799.87/716,474.56
  6. Step 6: Final answer
    x = 593,292.18

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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.