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Finding the Fourth Proportional to 630,906.04, 870,649.50 and 404,551

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Solution

The fourth proportional to 630,906.04, 870,649.50 and 404,551 is: 558,279.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,906.04 : 870,649.50 = 404,551 : x
  2. Step 2: Convert to fraction form
    630,906.04/870,649.50 = 404,551/x
  3. Step 3: Cross multiply
    630,906.04x = 870,649.50 × 404,551
  4. Step 4: Simplify right side
    630,906.04x = 352,222,125,874.50
  5. Step 5: Solve for x
    x = 352,222,125,874.50/630,906.04
  6. Step 6: Final answer
    x = 558,279.84

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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.