Home / 434,428.20-651,642.30-392,437.80

Finding the Fourth Proportional to 434,428.20, 651,642.30 and 392,437.80

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Solution

The fourth proportional to 434,428.20, 651,642.30 and 392,437.80 is: 588,656.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,428.20 : 651,642.30 = 392,437.80 : x
  2. Step 2: Convert to fraction form
    434,428.20/651,642.30 = 392,437.80/x
  3. Step 3: Cross multiply
    434,428.20x = 651,642.30 × 392,437.80
  4. Step 4: Simplify right side
    434,428.20x = 255,729,070,598.94
  5. Step 5: Solve for x
    x = 255,729,070,598.94/434,428.20
  6. Step 6: Final answer
    x = 588,656.70

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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.