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Finding the Fourth Proportional to 425,251.80, 637,877.70 and 388,510.20

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Solution

The fourth proportional to 425,251.80, 637,877.70 and 388,510.20 is: 582,765.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,251.80 : 637,877.70 = 388,510.20 : x
  2. Step 2: Convert to fraction form
    425,251.80/637,877.70 = 388,510.20/x
  3. Step 3: Cross multiply
    425,251.80x = 637,877.70 × 388,510.20
  4. Step 4: Simplify right side
    425,251.80x = 247,821,992,802.54
  5. Step 5: Solve for x
    x = 247,821,992,802.54/425,251.80
  6. Step 6: Final answer
    x = 582,765.30

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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.