Home / 663,552,278.40-995,328,417.60-636,678,422.40

Finding the Fourth Proportional to 663,552,278.40, 995,328,417.60 and 636,678,422.40

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Solution

The fourth proportional to 663,552,278.40, 995,328,417.60 and 636,678,422.40 is: 955,017,633.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,552,278.40 : 995,328,417.60 = 636,678,422.40 : x
  2. Step 2: Convert to fraction form
    663,552,278.40/995,328,417.60 = 636,678,422.40/x
  3. Step 3: Cross multiply
    663,552,278.40x = 995,328,417.60 × 636,678,422.40
  4. Step 4: Simplify right side
    663,552,278.40x = 633,704,126,687,456,384
  5. Step 5: Solve for x
    x = 633,704,126,687,456,384/663,552,278.40
  6. Step 6: Final answer
    x = 955,017,633.60

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Double scale
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Similar ratio
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1.5x scale

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.