Home / 642,127.30-886,731.33-480,702.09

Finding the Fourth Proportional to 642,127.30, 886,731.33 and 480,702.09

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Solution

The fourth proportional to 642,127.30, 886,731.33 and 480,702.09 is: 663,814.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,127.30 : 886,731.33 = 480,702.09 : x
  2. Step 2: Convert to fraction form
    642,127.30/886,731.33 = 480,702.09/x
  3. Step 3: Cross multiply
    642,127.30x = 886,731.33 × 480,702.09
  4. Step 4: Simplify right side
    642,127.30x = 426,253,603,599.48
  5. Step 5: Solve for x
    x = 426,253,603,599.48/642,127.30
  6. Step 6: Final answer
    x = 663,814.80

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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.