Home / 642,127.36-886,731.42-480,702.16

Finding the Fourth Proportional to 642,127.36, 886,731.42 and 480,702.16

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Solution

The fourth proportional to 642,127.36, 886,731.42 and 480,702.16 is: 663,814.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,127.36 : 886,731.42 = 480,702.16 : x
  2. Step 2: Convert to fraction form
    642,127.36/886,731.42 = 480,702.16/x
  3. Step 3: Cross multiply
    642,127.36x = 886,731.42 × 480,702.16
  4. Step 4: Simplify right side
    642,127.36x = 426,253,702,096.70
  5. Step 5: Solve for x
    x = 426,253,702,096.70/642,127.36
  6. Step 6: Final answer
    x = 663,814.89

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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.