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Finding the Fourth Proportional to 641,726.82, 885,590.01 and 355,251.69

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Solution

The fourth proportional to 641,726.82, 885,590.01 and 355,251.69 is: 490,251.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,726.82 : 885,590.01 = 355,251.69 : x
  2. Step 2: Convert to fraction form
    641,726.82/885,590.01 = 355,251.69/x
  3. Step 3: Cross multiply
    641,726.82x = 885,590.01 × 355,251.69
  4. Step 4: Simplify right side
    641,726.82x = 314,607,347,699.62
  5. Step 5: Solve for x
    x = 314,607,347,699.62/641,726.82
  6. Step 6: Final answer
    x = 490,251.21

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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.