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Finding the Fourth Proportional to 766,806.72, 1,058,179.10 and 417,950.13

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Solution

The fourth proportional to 766,806.72, 1,058,179.10 and 417,950.13 is: 576,763.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,806.72 : 1,058,179.10 = 417,950.13 : x
  2. Step 2: Convert to fraction form
    766,806.72/1,058,179.10 = 417,950.13/x
  3. Step 3: Cross multiply
    766,806.72x = 1,058,179.10 × 417,950.13
  4. Step 4: Simplify right side
    766,806.72x = 442,266,092,408.28
  5. Step 5: Solve for x
    x = 442,266,092,408.28/766,806.72
  6. Step 6: Final answer
    x = 576,763.45

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Double scale
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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.