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Finding the Fourth Proportional to 630,934.48, 870,586.77 and 372,775.78

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Solution

The fourth proportional to 630,934.48, 870,586.77 and 372,775.78 is: 514,369.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,934.48 : 870,586.77 = 372,775.78 : x
  2. Step 2: Convert to fraction form
    630,934.48/870,586.77 = 372,775.78/x
  3. Step 3: Cross multiply
    630,934.48x = 870,586.77 × 372,775.78
  4. Step 4: Simplify right side
    630,934.48x = 324,533,662,244.43
  5. Step 5: Solve for x
    x = 324,533,662,244.43/630,934.48
  6. Step 6: Final answer
    x = 514,369.83

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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.