Home / 534,979,939.80-802,469,909.70-389,105,290.20

Finding the Fourth Proportional to 534,979,939.80, 802,469,909.70 and 389,105,290.20

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Solution

The fourth proportional to 534,979,939.80, 802,469,909.70 and 389,105,290.20 is: 583,657,935.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,979,939.80 : 802,469,909.70 = 389,105,290.20 : x
  2. Step 2: Convert to fraction form
    534,979,939.80/802,469,909.70 = 389,105,290.20/x
  3. Step 3: Cross multiply
    534,979,939.80x = 802,469,909.70 × 389,105,290.20
  4. Step 4: Simplify right side
    534,979,939.80x = 312,245,287,090,586,304
  5. Step 5: Solve for x
    x = 312,245,287,090,586,304/534,979,939.80
  6. Step 6: Final answer
    x = 583,657,935.30

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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.