Home / 870,816.80-1,306,225.20-658,240.40

Finding the Fourth Proportional to 870,816.80, 1,306,225.20 and 658,240.40

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Solution

The fourth proportional to 870,816.80, 1,306,225.20 and 658,240.40 is: 987,360.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,816.80 : 1,306,225.20 = 658,240.40 : x
  2. Step 2: Convert to fraction form
    870,816.80/1,306,225.20 = 658,240.40/x
  3. Step 3: Cross multiply
    870,816.80x = 1,306,225.20 × 658,240.40
  4. Step 4: Simplify right side
    870,816.80x = 859,810,198,138.08
  5. Step 5: Solve for x
    x = 859,810,198,138.08/870,816.80
  6. Step 6: Final answer
    x = 987,360.60

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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.