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Finding the Fourth Proportional to 546,768.60, 820,152.90 and 385,805.40

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Solution

The fourth proportional to 546,768.60, 820,152.90 and 385,805.40 is: 578,708.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,768.60 : 820,152.90 = 385,805.40 : x
  2. Step 2: Convert to fraction form
    546,768.60/820,152.90 = 385,805.40/x
  3. Step 3: Cross multiply
    546,768.60x = 820,152.90 × 385,805.40
  4. Step 4: Simplify right side
    546,768.60x = 316,419,417,645.66
  5. Step 5: Solve for x
    x = 316,419,417,645.66/546,768.60
  6. Step 6: Final answer
    x = 578,708.10

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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.