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Finding the Fourth Proportional to 556,657,884.80, 834,986,827.20 and 338,979,651.20

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Solution

The fourth proportional to 556,657,884.80, 834,986,827.20 and 338,979,651.20 is: 508,469,476.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,657,884.80 : 834,986,827.20 = 338,979,651.20 : x
  2. Step 2: Convert to fraction form
    556,657,884.80/834,986,827.20 = 338,979,651.20/x
  3. Step 3: Cross multiply
    556,657,884.80x = 834,986,827.20 × 338,979,651.20
  4. Step 4: Simplify right side
    556,657,884.80x = 283,043,543,440,850,688
  5. Step 5: Solve for x
    x = 283,043,543,440,850,688/556,657,884.80
  6. Step 6: Final answer
    x = 508,469,476.80

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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.