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Finding the Fourth Proportional to 554,456.70, 765,149.64 and 299,807.28

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Solution

The fourth proportional to 554,456.70, 765,149.64 and 299,807.28 is: 413,733.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,456.70 : 765,149.64 = 299,807.28 : x
  2. Step 2: Convert to fraction form
    554,456.70/765,149.64 = 299,807.28/x
  3. Step 3: Cross multiply
    554,456.70x = 765,149.64 × 299,807.28
  4. Step 4: Simplify right side
    554,456.70x = 229,397,432,361.38
  5. Step 5: Solve for x
    x = 229,397,432,361.38/554,456.70
  6. Step 6: Final answer
    x = 413,733.72

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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.