Home / 515,540,054.81-711,445,236.19-280,592,399.88

Finding the Fourth Proportional to 515,540,054.81, 711,445,236.19 and 280,592,399.88

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Solution

The fourth proportional to 515,540,054.81, 711,445,236.19 and 280,592,399.88 is: 387,217,490.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,540,054.81 : 711,445,236.19 = 280,592,399.88 : x
  2. Step 2: Convert to fraction form
    515,540,054.81/711,445,236.19 = 280,592,399.88/x
  3. Step 3: Cross multiply
    515,540,054.81x = 711,445,236.19 × 280,592,399.88
  4. Step 4: Simplify right side
    515,540,054.81x = 199,626,126,205,044,032
  5. Step 5: Solve for x
    x = 199,626,126,205,044,032/515,540,054.81
  6. Step 6: Final answer
    x = 387,217,490.36

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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.