Home / 743,876.10-1,115,814.15-388,998.90

Finding the Fourth Proportional to 743,876.10, 1,115,814.15 and 388,998.90

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Solution

The fourth proportional to 743,876.10, 1,115,814.15 and 388,998.90 is: 583,498.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,876.10 : 1,115,814.15 = 388,998.90 : x
  2. Step 2: Convert to fraction form
    743,876.10/1,115,814.15 = 388,998.90/x
  3. Step 3: Cross multiply
    743,876.10x = 1,115,814.15 × 388,998.90
  4. Step 4: Simplify right side
    743,876.10x = 434,050,476,954.44
  5. Step 5: Solve for x
    x = 434,050,476,954.44/743,876.10
  6. Step 6: Final answer
    x = 583,498.35

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Similar ratio
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1.5x scale

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.