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Finding the Fourth Proportional to 721,058.37, 994,759.86 and 415,061.53

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Solution

The fourth proportional to 721,058.37, 994,759.86 and 415,061.53 is: 572,611.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,058.37 : 994,759.86 = 415,061.53 : x
  2. Step 2: Convert to fraction form
    721,058.37/994,759.86 = 415,061.53/x
  3. Step 3: Cross multiply
    721,058.37x = 994,759.86 × 415,061.53
  4. Step 4: Simplify right side
    721,058.37x = 412,886,549,474.19
  5. Step 5: Solve for x
    x = 412,886,549,474.19/721,058.37
  6. Step 6: Final answer
    x = 572,611.83

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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.