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Finding the Fourth Proportional to 663,270.81, 915,030.02 and 433,429.11

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Solution

The fourth proportional to 663,270.81, 915,030.02 and 433,429.11 is: 597,946.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,270.81 : 915,030.02 = 433,429.11 : x
  2. Step 2: Convert to fraction form
    663,270.81/915,030.02 = 433,429.11/x
  3. Step 3: Cross multiply
    663,270.81x = 915,030.02 × 433,429.11
  4. Step 4: Simplify right side
    663,270.81x = 396,600,645,024.74
  5. Step 5: Solve for x
    x = 396,600,645,024.74/663,270.81
  6. Step 6: Final answer
    x = 597,946.78

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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.