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Finding the Fourth Proportional to 610,073.70, 915,110.55 and 491,975.70

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Solution

The fourth proportional to 610,073.70, 915,110.55 and 491,975.70 is: 737,963.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,073.70 : 915,110.55 = 491,975.70 : x
  2. Step 2: Convert to fraction form
    610,073.70/915,110.55 = 491,975.70/x
  3. Step 3: Cross multiply
    610,073.70x = 915,110.55 × 491,975.70
  4. Step 4: Simplify right side
    610,073.70x = 450,212,153,413.64
  5. Step 5: Solve for x
    x = 450,212,153,413.64/610,073.70
  6. Step 6: Final answer
    x = 737,963.55

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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.