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Finding the Fourth Proportional to 554,711,742.57, 765,502,950.88 and 300,393,542.78

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Solution

The fourth proportional to 554,711,742.57, 765,502,950.88 and 300,393,542.78 is: 414,543,493.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,711,742.57 : 765,502,950.88 = 300,393,542.78 : x
  2. Step 2: Convert to fraction form
    554,711,742.57/765,502,950.88 = 300,393,542.78/x
  3. Step 3: Cross multiply
    554,711,742.57x = 765,502,950.88 × 300,393,542.78
  4. Step 4: Simplify right side
    554,711,742.57x = 229,952,143,423,387,488
  5. Step 5: Solve for x
    x = 229,952,143,423,387,488/554,711,742.57
  6. Step 6: Final answer
    x = 414,543,493.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.