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Finding the Fourth Proportional to 630,843.95, 870,553.46 and 358,906.00

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Solution

The fourth proportional to 630,843.95, 870,553.46 and 358,906.00 is: 495,283.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,843.95 : 870,553.46 = 358,906.00 : x
  2. Step 2: Convert to fraction form
    630,843.95/870,553.46 = 358,906.00/x
  3. Step 3: Cross multiply
    630,843.95x = 870,553.46 × 358,906.00
  4. Step 4: Simplify right side
    630,843.95x = 312,446,853,967.46
  5. Step 5: Solve for x
    x = 312,446,853,967.46/630,843.95
  6. Step 6: Final answer
    x = 495,283.90

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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.