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Finding the Fourth Proportional to 452,000.70, 678,001.05 and 115,040.70

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Solution

The fourth proportional to 452,000.70, 678,001.05 and 115,040.70 is: 172,561.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,000.70 : 678,001.05 = 115,040.70 : x
  2. Step 2: Convert to fraction form
    452,000.70/678,001.05 = 115,040.70/x
  3. Step 3: Cross multiply
    452,000.70x = 678,001.05 × 115,040.70
  4. Step 4: Simplify right side
    452,000.70x = 77,997,715,392.74
  5. Step 5: Solve for x
    x = 77,997,715,392.74/452,000.70
  6. Step 6: Final answer
    x = 172,561.05

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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.