Home / 447,070.20-670,605.30-398,081.40

Finding the Fourth Proportional to 447,070.20, 670,605.30 and 398,081.40

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Solution

The fourth proportional to 447,070.20, 670,605.30 and 398,081.40 is: 597,122.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,070.20 : 670,605.30 = 398,081.40 : x
  2. Step 2: Convert to fraction form
    447,070.20/670,605.30 = 398,081.40/x
  3. Step 3: Cross multiply
    447,070.20x = 670,605.30 × 398,081.40
  4. Step 4: Simplify right side
    447,070.20x = 266,955,496,671.42
  5. Step 5: Solve for x
    x = 266,955,496,671.42/447,070.20
  6. Step 6: Final answer
    x = 597,122.10

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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.