Home / 986,529.15-1,479,980.31-312,780.06

Finding the Fourth Proportional to 986,529.15, 1,479,980.31 and 312,780.06

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Solution

The fourth proportional to 986,529.15, 1,479,980.31 and 312,780.06 is: 469,229.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,529.15 : 1,479,980.31 = 312,780.06 : x
  2. Step 2: Convert to fraction form
    986,529.15/1,479,980.31 = 312,780.06/x
  3. Step 3: Cross multiply
    986,529.15x = 1,479,980.31 × 312,780.06
  4. Step 4: Simplify right side
    986,529.15x = 462,908,330,160.62
  5. Step 5: Solve for x
    x = 462,908,330,160.62/986,529.15
  6. Step 6: Final answer
    x = 469,229.25

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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.