Home / 989,243.70-1,482,868.64-389,972.90

Finding the Fourth Proportional to 989,243.70, 1,482,868.64 and 389,972.90

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Solution

The fourth proportional to 989,243.70, 1,482,868.64 and 389,972.90 is: 584,566.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,243.70 : 1,482,868.64 = 389,972.90 : x
  2. Step 2: Convert to fraction form
    989,243.70/1,482,868.64 = 389,972.90/x
  3. Step 3: Cross multiply
    989,243.70x = 1,482,868.64 × 389,972.90
  4. Step 4: Simplify right side
    989,243.70x = 578,278,583,859.86
  5. Step 5: Solve for x
    x = 578,278,583,859.86/989,243.70
  6. Step 6: Final answer
    x = 584,566.35

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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.