Home / 402,746.60-605,432.10-285,231.80

Finding the Fourth Proportional to 402,746.60, 605,432.10 and 285,231.80

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Solution

The fourth proportional to 402,746.60, 605,432.10 and 285,231.80 is: 428,777.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,746.60 : 605,432.10 = 285,231.80 : x
  2. Step 2: Convert to fraction form
    402,746.60/605,432.10 = 285,231.80/x
  3. Step 3: Cross multiply
    402,746.60x = 605,432.10 × 285,231.80
  4. Step 4: Simplify right side
    402,746.60x = 172,688,487,660.78
  5. Step 5: Solve for x
    x = 172,688,487,660.78/402,746.60
  6. Step 6: Final answer
    x = 428,777.02

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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.