Home / 986,530.15-1,479,981.81-312,781.06

Finding the Fourth Proportional to 986,530.15, 1,479,981.81 and 312,781.06

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Solution

The fourth proportional to 986,530.15, 1,479,981.81 and 312,781.06 is: 469,230.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,530.15 : 1,479,981.81 = 312,781.06 : x
  2. Step 2: Convert to fraction form
    986,530.15/1,479,981.81 = 312,781.06/x
  3. Step 3: Cross multiply
    986,530.15x = 1,479,981.81 × 312,781.06
  4. Step 4: Simplify right side
    986,530.15x = 462,910,279,312.52
  5. Step 5: Solve for x
    x = 462,910,279,312.52/986,530.15
  6. Step 6: Final answer
    x = 469,230.75

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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.