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Finding the Fourth Proportional to 641,679.90, 885,539.16 and 369,726.72

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Solution

The fourth proportional to 641,679.90, 885,539.16 and 369,726.72 is: 510,234.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,679.90 : 885,539.16 = 369,726.72 : x
  2. Step 2: Convert to fraction form
    641,679.90/885,539.16 = 369,726.72/x
  3. Step 3: Cross multiply
    641,679.90x = 885,539.16 × 369,726.72
  4. Step 4: Simplify right side
    641,679.90x = 327,407,489,058.36
  5. Step 5: Solve for x
    x = 327,407,489,058.36/641,679.90
  6. Step 6: Final answer
    x = 510,234.91

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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.