Home / 1,422,486.40-2,128,545.60-890,262.40

Finding the Fourth Proportional to 1,422,486.40, 2,128,545.60 and 890,262.40

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Solution

The fourth proportional to 1,422,486.40, 2,128,545.60 and 890,262.40 is: 1,332,149.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422,486.40 : 2,128,545.60 = 890,262.40 : x
  2. Step 2: Convert to fraction form
    1,422,486.40/2,128,545.60 = 890,262.40/x
  3. Step 3: Cross multiply
    1,422,486.40x = 2,128,545.60 × 890,262.40
  4. Step 4: Simplify right side
    1,422,486.40x = 1,894,964,114,365.44
  5. Step 5: Solve for x
    x = 1,894,964,114,365.44/1,422,486.40
  6. Step 6: Final answer
    x = 1,332,149.20

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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.