Home / 870,814.80-1,306,222.20-658,238.40

Finding the Fourth Proportional to 870,814.80, 1,306,222.20 and 658,238.40

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Solution

The fourth proportional to 870,814.80, 1,306,222.20 and 658,238.40 is: 987,357.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,814.80 : 1,306,222.20 = 658,238.40 : x
  2. Step 2: Convert to fraction form
    870,814.80/1,306,222.20 = 658,238.40/x
  3. Step 3: Cross multiply
    870,814.80x = 1,306,222.20 × 658,238.40
  4. Step 4: Simplify right side
    870,814.80x = 859,805,610,972.48
  5. Step 5: Solve for x
    x = 859,805,610,972.48/870,814.80
  6. Step 6: Final answer
    x = 987,357.60

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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.