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Finding the Fourth Proportional to 424,543.80, 636,815.70 and 282,826.20

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Solution

The fourth proportional to 424,543.80, 636,815.70 and 282,826.20 is: 424,239.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,543.80 : 636,815.70 = 282,826.20 : x
  2. Step 2: Convert to fraction form
    424,543.80/636,815.70 = 282,826.20/x
  3. Step 3: Cross multiply
    424,543.80x = 636,815.70 × 282,826.20
  4. Step 4: Simplify right side
    424,543.80x = 180,108,164,531.34
  5. Step 5: Solve for x
    x = 180,108,164,531.34/424,543.80
  6. Step 6: Final answer
    x = 424,239.30

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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.