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Finding the Fourth Proportional to 554,711,741.57, 765,502,949.50 and 300,393,541.78

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Solution

The fourth proportional to 554,711,741.57, 765,502,949.50 and 300,393,541.78 is: 414,543,491.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,711,741.57 : 765,502,949.50 = 300,393,541.78 : x
  2. Step 2: Convert to fraction form
    554,711,741.57/765,502,949.50 = 300,393,541.78/x
  3. Step 3: Cross multiply
    554,711,741.57x = 765,502,949.50 × 300,393,541.78
  4. Step 4: Simplify right side
    554,711,741.57x = 229,952,142,240,676,704
  5. Step 5: Solve for x
    x = 229,952,142,240,676,704/554,711,741.57
  6. Step 6: Final answer
    x = 414,543,491.70

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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.