Home / 741,710.40-1,112,565.60-405,787.20

Finding the Fourth Proportional to 741,710.40, 1,112,565.60 and 405,787.20

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Solution

The fourth proportional to 741,710.40, 1,112,565.60 and 405,787.20 is: 608,680.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    741,710.40 : 1,112,565.60 = 405,787.20 : x
  2. Step 2: Convert to fraction form
    741,710.40/1,112,565.60 = 405,787.20/x
  3. Step 3: Cross multiply
    741,710.40x = 1,112,565.60 × 405,787.20
  4. Step 4: Simplify right side
    741,710.40x = 451,464,879,640.32
  5. Step 5: Solve for x
    x = 451,464,879,640.32/741,710.40
  6. Step 6: Final answer
    x = 608,680.80

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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.