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Finding the Fourth Proportional to 531,947.20, 797,920.80 and 265,748.80

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Solution

The fourth proportional to 531,947.20, 797,920.80 and 265,748.80 is: 398,623.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,947.20 : 797,920.80 = 265,748.80 : x
  2. Step 2: Convert to fraction form
    531,947.20/797,920.80 = 265,748.80/x
  3. Step 3: Cross multiply
    531,947.20x = 797,920.80 × 265,748.80
  4. Step 4: Simplify right side
    531,947.20x = 212,046,495,095.04
  5. Step 5: Solve for x
    x = 212,046,495,095.04/531,947.20
  6. Step 6: Final answer
    x = 398,623.20

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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.