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Finding the Fourth Proportional to 552,654.30, 828,981.45 and 412,686.30

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Solution

The fourth proportional to 552,654.30, 828,981.45 and 412,686.30 is: 619,029.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,654.30 : 828,981.45 = 412,686.30 : x
  2. Step 2: Convert to fraction form
    552,654.30/828,981.45 = 412,686.30/x
  3. Step 3: Cross multiply
    552,654.30x = 828,981.45 × 412,686.30
  4. Step 4: Simplify right side
    552,654.30x = 342,109,287,369.14
  5. Step 5: Solve for x
    x = 342,109,287,369.14/552,654.30
  6. Step 6: Final answer
    x = 619,029.45

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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.