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Finding the Fourth Proportional to 552,474.80, 828,712.20 and 312,342.20

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Solution

The fourth proportional to 552,474.80, 828,712.20 and 312,342.20 is: 468,513.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,474.80 : 828,712.20 = 312,342.20 : x
  2. Step 2: Convert to fraction form
    552,474.80/828,712.20 = 312,342.20/x
  3. Step 3: Cross multiply
    552,474.80x = 828,712.20 × 312,342.20
  4. Step 4: Simplify right side
    552,474.80x = 258,841,791,714.84
  5. Step 5: Solve for x
    x = 258,841,791,714.84/552,474.80
  6. Step 6: Final answer
    x = 468,513.30

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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.