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Finding the Fourth Proportional to 542,001.60, 812,678.40 and 331,790.40

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Solution

The fourth proportional to 542,001.60, 812,678.40 and 331,790.40 is: 497,487.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,001.60 : 812,678.40 = 331,790.40 : x
  2. Step 2: Convert to fraction form
    542,001.60/812,678.40 = 331,790.40/x
  3. Step 3: Cross multiply
    542,001.60x = 812,678.40 × 331,790.40
  4. Step 4: Simplify right side
    542,001.60x = 269,638,891,407.36
  5. Step 5: Solve for x
    x = 269,638,891,407.36/542,001.60
  6. Step 6: Final answer
    x = 497,487.26

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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.