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Finding the Fourth Proportional to 547,298.79, 820,951.11 and 358,951.86

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Solution

The fourth proportional to 547,298.79, 820,951.11 and 358,951.86 is: 538,429.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,298.79 : 820,951.11 = 358,951.86 : x
  2. Step 2: Convert to fraction form
    547,298.79/820,951.11 = 358,951.86/x
  3. Step 3: Cross multiply
    547,298.79x = 820,951.11 × 358,951.86
  4. Step 4: Simplify right side
    547,298.79x = 294,681,922,901.43
  5. Step 5: Solve for x
    x = 294,681,922,901.43/547,298.79
  6. Step 6: Final answer
    x = 538,429.70

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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.