Home / 988,387.45-1,482,019.36-389,023.70

Finding the Fourth Proportional to 988,387.45, 1,482,019.36 and 389,023.70

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Solution

The fourth proportional to 988,387.45, 1,482,019.36 and 389,023.70 is: 583,314.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,387.45 : 1,482,019.36 = 389,023.70 : x
  2. Step 2: Convert to fraction form
    988,387.45/1,482,019.36 = 389,023.70/x
  3. Step 3: Cross multiply
    988,387.45x = 1,482,019.36 × 389,023.70
  4. Step 4: Simplify right side
    988,387.45x = 576,540,646,516.18
  5. Step 5: Solve for x
    x = 576,540,646,516.18/988,387.45
  6. Step 6: Final answer
    x = 583,314.42

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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.