Home / 515,485,734.62-711,372,156.10-280,539,211.46

Finding the Fourth Proportional to 515,485,734.62, 711,372,156.10 and 280,539,211.46

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Solution

The fourth proportional to 515,485,734.62, 711,372,156.10 and 280,539,211.46 is: 387,145,114.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,485,734.62 : 711,372,156.10 = 280,539,211.46 : x
  2. Step 2: Convert to fraction form
    515,485,734.62/711,372,156.10 = 280,539,211.46/x
  3. Step 3: Cross multiply
    515,485,734.62x = 711,372,156.10 × 280,539,211.46
  4. Step 4: Simplify right side
    515,485,734.62x = 199,567,783,722,635,808
  5. Step 5: Solve for x
    x = 199,567,783,722,635,808/515,485,734.62
  6. Step 6: Final answer
    x = 387,145,114.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.