Home / 645,468.77-967,317.42-408,387.04

Finding the Fourth Proportional to 645,468.77, 967,317.42 and 408,387.04

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Solution

The fourth proportional to 645,468.77, 967,317.42 and 408,387.04 is: 612,020.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,468.77 : 967,317.42 = 408,387.04 : x
  2. Step 2: Convert to fraction form
    645,468.77/967,317.42 = 408,387.04/x
  3. Step 3: Cross multiply
    645,468.77x = 967,317.42 × 408,387.04
  4. Step 4: Simplify right side
    645,468.77x = 395,039,897,894.24
  5. Step 5: Solve for x
    x = 395,039,897,894.24/645,468.77
  6. Step 6: Final answer
    x = 612,020.16

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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.