Home / 645,620.20-968,430.30-531,458.80

Finding the Fourth Proportional to 645,620.20, 968,430.30 and 531,458.80

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Solution

The fourth proportional to 645,620.20, 968,430.30 and 531,458.80 is: 797,188.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,620.20 : 968,430.30 = 531,458.80 : x
  2. Step 2: Convert to fraction form
    645,620.20/968,430.30 = 531,458.80/x
  3. Step 3: Cross multiply
    645,620.20x = 968,430.30 × 531,458.80
  4. Step 4: Simplify right side
    645,620.20x = 514,680,805,121.64
  5. Step 5: Solve for x
    x = 514,680,805,121.64/645,620.20
  6. Step 6: Final answer
    x = 797,188.20

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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.