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Finding the Fourth Proportional to 630,650.94, 870,318.66 and 358,711.86

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Solution

The fourth proportional to 630,650.94, 870,318.66 and 358,711.86 is: 495,033.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,650.94 : 870,318.66 = 358,711.86 : x
  2. Step 2: Convert to fraction form
    630,650.94/870,318.66 = 358,711.86/x
  3. Step 3: Cross multiply
    630,650.94x = 870,318.66 × 358,711.86
  4. Step 4: Simplify right side
    630,650.94x = 312,193,625,321.31
  5. Step 5: Solve for x
    x = 312,193,625,321.31/630,650.94
  6. Step 6: Final answer
    x = 495,033.95

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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.