Home / 478,498,959.04-660,451,414.80-311,650,979.44

Finding the Fourth Proportional to 478,498,959.04, 660,451,414.80 and 311,650,979.44

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Solution

The fourth proportional to 478,498,959.04, 660,451,414.80 and 311,650,979.44 is: 430,158,365.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,498,959.04 : 660,451,414.80 = 311,650,979.44 : x
  2. Step 2: Convert to fraction form
    478,498,959.04/660,451,414.80 = 311,650,979.44/x
  3. Step 3: Cross multiply
    478,498,959.04x = 660,451,414.80 × 311,650,979.44
  4. Step 4: Simplify right side
    478,498,959.04x = 205,830,330,294,953,696
  5. Step 5: Solve for x
    x = 205,830,330,294,953,696/478,498,959.04
  6. Step 6: Final answer
    x = 430,158,365.88

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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.