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Finding the Fourth Proportional to 658,707.60, 908,665.84 and 400,663.47

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Solution

The fourth proportional to 658,707.60, 908,665.84 and 400,663.47 is: 552,702.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,707.60 : 908,665.84 = 400,663.47 : x
  2. Step 2: Convert to fraction form
    658,707.60/908,665.84 = 400,663.47/x
  3. Step 3: Cross multiply
    658,707.60x = 908,665.84 × 400,663.47
  4. Step 4: Simplify right side
    658,707.60x = 364,069,209,877.57
  5. Step 5: Solve for x
    x = 364,069,209,877.57/658,707.60
  6. Step 6: Final answer
    x = 552,702.31

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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.