Home / 840,400.60-1,159,761.20-458,435.40

Finding the Fourth Proportional to 840,400.60, 1,159,761.20 and 458,435.40

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Solution

The fourth proportional to 840,400.60, 1,159,761.20 and 458,435.40 is: 632,645.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,400.60 : 1,159,761.20 = 458,435.40 : x
  2. Step 2: Convert to fraction form
    840,400.60/1,159,761.20 = 458,435.40/x
  3. Step 3: Cross multiply
    840,400.60x = 1,159,761.20 × 458,435.40
  4. Step 4: Simplify right side
    840,400.60x = 531,675,589,626.48
  5. Step 5: Solve for x
    x = 531,675,589,626.48/840,400.60
  6. Step 6: Final answer
    x = 632,645.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.