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Finding the Fourth Proportional to 556,538,998.80, 834,808,498.20 and 326,389,616.40

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Solution

The fourth proportional to 556,538,998.80, 834,808,498.20 and 326,389,616.40 is: 489,584,424.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,538,998.80 : 834,808,498.20 = 326,389,616.40 : x
  2. Step 2: Convert to fraction form
    556,538,998.80/834,808,498.20 = 326,389,616.40/x
  3. Step 3: Cross multiply
    556,538,998.80x = 834,808,498.20 × 326,389,616.40
  4. Step 4: Simplify right side
    556,538,998.80x = 272,472,825,494,958,080
  5. Step 5: Solve for x
    x = 272,472,825,494,958,080/556,538,998.80
  6. Step 6: Final answer
    x = 489,584,424.60

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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.