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Finding the Fourth Proportional to 438,000.60, 655,772.10 and 425,712.60

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Solution

The fourth proportional to 438,000.60, 655,772.10 and 425,712.60 is: 637,374.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,000.60 : 655,772.10 = 425,712.60 : x
  2. Step 2: Convert to fraction form
    438,000.60/655,772.10 = 425,712.60/x
  3. Step 3: Cross multiply
    438,000.60x = 655,772.10 × 425,712.60
  4. Step 4: Simplify right side
    438,000.60x = 279,170,445,698.46
  5. Step 5: Solve for x
    x = 279,170,445,698.46/438,000.60
  6. Step 6: Final answer
    x = 637,374.57

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1.5x scale

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.