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Finding the Fourth Proportional to 522,868.80, 783,136.80 and 404,155.20

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Solution

The fourth proportional to 522,868.80, 783,136.80 and 404,155.20 is: 605,331.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,868.80 : 783,136.80 = 404,155.20 : x
  2. Step 2: Convert to fraction form
    522,868.80/783,136.80 = 404,155.20/x
  3. Step 3: Cross multiply
    522,868.80x = 783,136.80 × 404,155.20
  4. Step 4: Simplify right side
    522,868.80x = 316,508,810,031.36
  5. Step 5: Solve for x
    x = 316,508,810,031.36/522,868.80
  6. Step 6: Final answer
    x = 605,331.22

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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.