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Finding the Fourth Proportional to 484,685.46, 727,017.80 and 129,699.45

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Solution

The fourth proportional to 484,685.46, 727,017.80 and 129,699.45 is: 194,546.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,685.46 : 727,017.80 = 129,699.45 : x
  2. Step 2: Convert to fraction form
    484,685.46/727,017.80 = 129,699.45/x
  3. Step 3: Cross multiply
    484,685.46x = 727,017.80 × 129,699.45
  4. Step 4: Simplify right side
    484,685.46x = 94,293,808,151.71
  5. Step 5: Solve for x
    x = 94,293,808,151.71/484,685.46
  6. Step 6: Final answer
    x = 194,546.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.