Home / 518,562,023.20-777,843,034.80-428,982,503.20

Finding the Fourth Proportional to 518,562,023.20, 777,843,034.80 and 428,982,503.20

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Solution

The fourth proportional to 518,562,023.20, 777,843,034.80 and 428,982,503.20 is: 643,473,754.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,562,023.20 : 777,843,034.80 = 428,982,503.20 : x
  2. Step 2: Convert to fraction form
    518,562,023.20/777,843,034.80 = 428,982,503.20/x
  3. Step 3: Cross multiply
    518,562,023.20x = 777,843,034.80 × 428,982,503.20
  4. Step 4: Simplify right side
    518,562,023.20x = 333,681,052,165,188,672
  5. Step 5: Solve for x
    x = 333,681,052,165,188,672/518,562,023.20
  6. Step 6: Final answer
    x = 643,473,754.80

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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.