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Finding the Fourth Proportional to 646,876.80, 970,444.80 and 542,419.20

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Solution

The fourth proportional to 646,876.80, 970,444.80 and 542,419.20 is: 813,737.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,876.80 : 970,444.80 = 542,419.20 : x
  2. Step 2: Convert to fraction form
    646,876.80/970,444.80 = 542,419.20/x
  3. Step 3: Cross multiply
    646,876.80x = 970,444.80 × 542,419.20
  4. Step 4: Simplify right side
    646,876.80x = 526,387,892,060.16
  5. Step 5: Solve for x
    x = 526,387,892,060.16/646,876.80
  6. Step 6: Final answer
    x = 813,737.47

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