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Finding the Fourth Proportional to 630,798.86, 870,472.01 and 358,841.16

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Solution

The fourth proportional to 630,798.86, 870,472.01 and 358,841.16 is: 495,183.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,798.86 : 870,472.01 = 358,841.16 : x
  2. Step 2: Convert to fraction form
    630,798.86/870,472.01 = 358,841.16/x
  3. Step 3: Cross multiply
    630,798.86x = 870,472.01 × 358,841.16
  4. Step 4: Simplify right side
    630,798.86x = 312,361,185,815.93
  5. Step 5: Solve for x
    x = 312,361,185,815.93/630,798.86
  6. Step 6: Final answer
    x = 495,183.50

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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.