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Finding the Fourth Proportional to 547,772.90, 821,659.35 and 489,712.10

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Solution

The fourth proportional to 547,772.90, 821,659.35 and 489,712.10 is: 734,568.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,772.90 : 821,659.35 = 489,712.10 : x
  2. Step 2: Convert to fraction form
    547,772.90/821,659.35 = 489,712.10/x
  3. Step 3: Cross multiply
    547,772.90x = 821,659.35 × 489,712.10
  4. Step 4: Simplify right side
    547,772.90x = 402,376,525,773.14
  5. Step 5: Solve for x
    x = 402,376,525,773.14/547,772.90
  6. Step 6: Final answer
    x = 734,568.15

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Double scale
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Similar ratio
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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.