Home / 551,336,979.20-827,005,468.80-426,501,488.30

Finding the Fourth Proportional to 551,336,979.20, 827,005,468.80 and 426,501,488.30

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Solution

The fourth proportional to 551,336,979.20, 827,005,468.80 and 426,501,488.30 is: 639,752,232.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,336,979.20 : 827,005,468.80 = 426,501,488.30 : x
  2. Step 2: Convert to fraction form
    551,336,979.20/827,005,468.80 = 426,501,488.30/x
  3. Step 3: Cross multiply
    551,336,979.20x = 827,005,468.80 × 426,501,488.30
  4. Step 4: Simplify right side
    551,336,979.20x = 352,719,063,275,439,232
  5. Step 5: Solve for x
    x = 352,719,063,275,439,232/551,336,979.20
  6. Step 6: Final answer
    x = 639,752,232.45

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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.