Home / 1,438,363.60-2,158,774.20-640,872.40

Finding the Fourth Proportional to 1,438,363.60, 2,158,774.20 and 640,872.40

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Solution

The fourth proportional to 1,438,363.60, 2,158,774.20 and 640,872.40 is: 961,856.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,363.60 : 2,158,774.20 = 640,872.40 : x
  2. Step 2: Convert to fraction form
    1,438,363.60/2,158,774.20 = 640,872.40/x
  3. Step 3: Cross multiply
    1,438,363.60x = 2,158,774.20 × 640,872.40
  4. Step 4: Simplify right side
    1,438,363.60x = 1,383,498,802,612.08
  5. Step 5: Solve for x
    x = 1,383,498,802,612.08/1,438,363.60
  6. Step 6: Final answer
    x = 961,856.10

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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.