Home / 676,872.10-1,015,308.15-638,164.90

Finding the Fourth Proportional to 676,872.10, 1,015,308.15 and 638,164.90

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Solution

The fourth proportional to 676,872.10, 1,015,308.15 and 638,164.90 is: 957,247.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,872.10 : 1,015,308.15 = 638,164.90 : x
  2. Step 2: Convert to fraction form
    676,872.10/1,015,308.15 = 638,164.90/x
  3. Step 3: Cross multiply
    676,872.10x = 1,015,308.15 × 638,164.90
  4. Step 4: Simplify right side
    676,872.10x = 647,934,024,013.94
  5. Step 5: Solve for x
    x = 647,934,024,013.94/676,872.10
  6. Step 6: Final answer
    x = 957,247.35

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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.