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Finding the Fourth Proportional to 630,818.92, 870,399.41 and 372,564.90

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Solution

The fourth proportional to 630,818.92, 870,399.41 and 372,564.90 is: 514,062.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,818.92 : 870,399.41 = 372,564.90 : x
  2. Step 2: Convert to fraction form
    630,818.92/870,399.41 = 372,564.90/x
  3. Step 3: Cross multiply
    630,818.92x = 870,399.41 × 372,564.90
  4. Step 4: Simplify right side
    630,818.92x = 324,280,267,283.89
  5. Step 5: Solve for x
    x = 324,280,267,283.89/630,818.92
  6. Step 6: Final answer
    x = 514,062.37

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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.