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Finding the Fourth Proportional to 547,281.70, 820,922.55 and 472,486.30

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Solution

The fourth proportional to 547,281.70, 820,922.55 and 472,486.30 is: 708,729.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,281.70 : 820,922.55 = 472,486.30 : x
  2. Step 2: Convert to fraction form
    547,281.70/820,922.55 = 472,486.30/x
  3. Step 3: Cross multiply
    547,281.70x = 820,922.55 × 472,486.30
  4. Step 4: Simplify right side
    547,281.70x = 387,874,658,236.07
  5. Step 5: Solve for x
    x = 387,874,658,236.07/547,281.70
  6. Step 6: Final answer
    x = 708,729.45

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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.