Home / 678,143,780.40-1,015,704,016.20-523,955,031.60

Finding the Fourth Proportional to 678,143,780.40, 1,015,704,016.20 and 523,955,031.60

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Solution

The fourth proportional to 678,143,780.40, 1,015,704,016.20 and 523,955,031.60 is: 784,764,596.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,143,780.40 : 1,015,704,016.20 = 523,955,031.60 : x
  2. Step 2: Convert to fraction form
    678,143,780.40/1,015,704,016.20 = 523,955,031.60/x
  3. Step 3: Cross multiply
    678,143,780.40x = 1,015,704,016.20 × 523,955,031.60
  4. Step 4: Simplify right side
    678,143,780.40x = 532,183,229,904,317,952
  5. Step 5: Solve for x
    x = 532,183,229,904,317,952/678,143,780.40
  6. Step 6: Final answer
    x = 784,764,596.07

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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.