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Finding the Fourth Proportional to 452,425.20, 678,589.20 and 120,001.20

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Solution

The fourth proportional to 452,425.20, 678,589.20 and 120,001.20 is: 179,988.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,425.20 : 678,589.20 = 120,001.20 : x
  2. Step 2: Convert to fraction form
    452,425.20/678,589.20 = 120,001.20/x
  3. Step 3: Cross multiply
    452,425.20x = 678,589.20 × 120,001.20
  4. Step 4: Simplify right side
    452,425.20x = 81,431,518,307.04
  5. Step 5: Solve for x
    x = 81,431,518,307.04/452,425.20
  6. Step 6: Final answer
    x = 179,988.91

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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.