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Finding the Fourth Proportional to 641,726.11, 885,592.47 and 351,332.77

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Solution

The fourth proportional to 641,726.11, 885,592.47 and 351,332.77 is: 484,844.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,726.11 : 885,592.47 = 351,332.77 : x
  2. Step 2: Convert to fraction form
    641,726.11/885,592.47 = 351,332.77/x
  3. Step 3: Cross multiply
    641,726.11x = 885,592.47 × 351,332.77
  4. Step 4: Simplify right side
    641,726.11x = 311,137,655,576.24
  5. Step 5: Solve for x
    x = 311,137,655,576.24/641,726.11
  6. Step 6: Final answer
    x = 484,844.94

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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.