Home / 6,438,672.65-8,876,489.76-5,136,344.91

Finding the Fourth Proportional to 6,438,672.65, 8,876,489.76 and 5,136,344.91

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Solution

The fourth proportional to 6,438,672.65, 8,876,489.76 and 5,136,344.91 is: 7,081,073.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,438,672.65 : 8,876,489.76 = 5,136,344.91 : x
  2. Step 2: Convert to fraction form
    6,438,672.65/8,876,489.76 = 5,136,344.91/x
  3. Step 3: Cross multiply
    6,438,672.65x = 8,876,489.76 × 5,136,344.91
  4. Step 4: Simplify right side
    6,438,672.65x = 45,592,712,997,443.12
  5. Step 5: Solve for x
    x = 45,592,712,997,443.12/6,438,672.65
  6. Step 6: Final answer
    x = 7,081,073.30

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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.