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Finding the Fourth Proportional to 542,009.60, 812,127.44 and 328,129.23

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Solution

The fourth proportional to 542,009.60, 812,127.44 and 328,129.23 is: 491,656.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,009.60 : 812,127.44 = 328,129.23 : x
  2. Step 2: Convert to fraction form
    542,009.60/812,127.44 = 328,129.23/x
  3. Step 3: Cross multiply
    542,009.60x = 812,127.44 × 328,129.23
  4. Step 4: Simplify right side
    542,009.60x = 266,482,755,414.87
  5. Step 5: Solve for x
    x = 266,482,755,414.87/542,009.60
  6. Step 6: Final answer
    x = 491,656.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.