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Finding the Fourth Proportional to 911,058.80, 1,366,588.20 and 491,154.80

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Solution

The fourth proportional to 911,058.80, 1,366,588.20 and 491,154.80 is: 736,732.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,058.80 : 1,366,588.20 = 491,154.80 : x
  2. Step 2: Convert to fraction form
    911,058.80/1,366,588.20 = 491,154.80/x
  3. Step 3: Cross multiply
    911,058.80x = 1,366,588.20 × 491,154.80
  4. Step 4: Simplify right side
    911,058.80x = 671,206,354,053.36
  5. Step 5: Solve for x
    x = 671,206,354,053.36/911,058.80
  6. Step 6: Final answer
    x = 736,732.20

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.