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Finding the Fourth Proportional to 546,918.60, 820,377.90 and 357,961.80

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Solution

The fourth proportional to 546,918.60, 820,377.90 and 357,961.80 is: 536,942.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,918.60 : 820,377.90 = 357,961.80 : x
  2. Step 2: Convert to fraction form
    546,918.60/820,377.90 = 357,961.80/x
  3. Step 3: Cross multiply
    546,918.60x = 820,377.90 × 357,961.80
  4. Step 4: Simplify right side
    546,918.60x = 293,663,949,764.22
  5. Step 5: Solve for x
    x = 293,663,949,764.22/546,918.60
  6. Step 6: Final answer
    x = 536,942.70

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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.