Home / 1,878,674.40-2,815,702.20-866,391.12

Finding the Fourth Proportional to 1,878,674.40, 2,815,702.20 and 866,391.12

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Solution

The fourth proportional to 1,878,674.40, 2,815,702.20 and 866,391.12 is: 1,298,521.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878,674.40 : 2,815,702.20 = 866,391.12 : x
  2. Step 2: Convert to fraction form
    1,878,674.40/2,815,702.20 = 866,391.12/x
  3. Step 3: Cross multiply
    1,878,674.40x = 2,815,702.20 × 866,391.12
  4. Step 4: Simplify right side
    1,878,674.40x = 2,439,499,382,644.46
  5. Step 5: Solve for x
    x = 2,439,499,382,644.46/1,878,674.40
  6. Step 6: Final answer
    x = 1,298,521.65

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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.