Home / 520,873,999.20-781,435,414.80-157,371,919.20

Finding the Fourth Proportional to 520,873,999.20, 781,435,414.80 and 157,371,919.20

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Solution

The fourth proportional to 520,873,999.20, 781,435,414.80 and 157,371,919.20 is: 236,095,468.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,873,999.20 : 781,435,414.80 = 157,371,919.20 : x
  2. Step 2: Convert to fraction form
    520,873,999.20/781,435,414.80 = 157,371,919.20/x
  3. Step 3: Cross multiply
    520,873,999.20x = 781,435,414.80 × 157,371,919.20
  4. Step 4: Simplify right side
    520,873,999.20x = 122,975,990,957,924,064
  5. Step 5: Solve for x
    x = 122,975,990,957,924,064/520,873,999.20
  6. Step 6: Final answer
    x = 236,095,468.67

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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.