Home / 988,517.10-1,482,775.68-855,000.78

Finding the Fourth Proportional to 988,517.10, 1,482,775.68 and 855,000.78

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Solution

The fourth proportional to 988,517.10, 1,482,775.68 and 855,000.78 is: 1,282,501.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,517.10 : 1,482,775.68 = 855,000.78 : x
  2. Step 2: Convert to fraction form
    988,517.10/1,482,775.68 = 855,000.78/x
  3. Step 3: Cross multiply
    988,517.10x = 1,482,775.68 × 855,000.78
  4. Step 4: Simplify right side
    988,517.10x = 1,267,774,362,965.03
  5. Step 5: Solve for x
    x = 1,267,774,362,965.03/988,517.10
  6. Step 6: Final answer
    x = 1,282,501.20

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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.