Home / 458,141,121.83-687,423,031.80-209,222,686.96

Finding the Fourth Proportional to 458,141,121.83, 687,423,031.80 and 209,222,686.96

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Solution

The fourth proportional to 458,141,121.83, 687,423,031.80 and 209,222,686.96 is: 313,930,548.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,141,121.83 : 687,423,031.80 = 209,222,686.96 : x
  2. Step 2: Convert to fraction form
    458,141,121.83/687,423,031.80 = 209,222,686.96/x
  3. Step 3: Cross multiply
    458,141,121.83x = 687,423,031.80 × 209,222,686.96
  4. Step 4: Simplify right side
    458,141,121.83x = 143,824,493,791,385,520
  5. Step 5: Solve for x
    x = 143,824,493,791,385,520/458,141,121.83
  6. Step 6: Final answer
    x = 313,930,548.77

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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.