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Finding the Fourth Proportional to 412,080.84, 618,024.28 and 112,490.20

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Solution

The fourth proportional to 412,080.84, 618,024.28 and 112,490.20 is: 168,708.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,080.84 : 618,024.28 = 112,490.20 : x
  2. Step 2: Convert to fraction form
    412,080.84/618,024.28 = 112,490.20/x
  3. Step 3: Cross multiply
    412,080.84x = 618,024.28 × 112,490.20
  4. Step 4: Simplify right side
    412,080.84x = 69,521,674,862.06
  5. Step 5: Solve for x
    x = 69,521,674,862.06/412,080.84
  6. Step 6: Final answer
    x = 168,708.83

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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.