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Finding the Fourth Proportional to 555,424.92, 766,488.84 and 300,776.40

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Solution

The fourth proportional to 555,424.92, 766,488.84 and 300,776.40 is: 415,072.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,424.92 : 766,488.84 = 300,776.40 : x
  2. Step 2: Convert to fraction form
    555,424.92/766,488.84 = 300,776.40/x
  3. Step 3: Cross multiply
    555,424.92x = 766,488.84 × 300,776.40
  4. Step 4: Simplify right side
    555,424.92x = 230,541,753,935.38
  5. Step 5: Solve for x
    x = 230,541,753,935.38/555,424.92
  6. Step 6: Final answer
    x = 415,072.76

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1.5x scale

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.