Home / 870,816.38-1,306,238.40-331,080.89

Finding the Fourth Proportional to 870,816.38, 1,306,238.40 and 331,080.89

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Solution

The fourth proportional to 870,816.38, 1,306,238.40 and 331,080.89 is: 496,626.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,816.38 : 1,306,238.40 = 331,080.89 : x
  2. Step 2: Convert to fraction form
    870,816.38/1,306,238.40 = 331,080.89/x
  3. Step 3: Cross multiply
    870,816.38x = 1,306,238.40 × 331,080.89
  4. Step 4: Simplify right side
    870,816.38x = 432,470,565,492.98
  5. Step 5: Solve for x
    x = 432,470,565,492.98/870,816.38
  6. Step 6: Final answer
    x = 496,626.59

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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.