Home / 743,156.33-1,025,521.46-420,868.77

Finding the Fourth Proportional to 743,156.33, 1,025,521.46 and 420,868.77

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Solution

The fourth proportional to 743,156.33, 1,025,521.46 and 420,868.77 is: 580,779.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,156.33 : 1,025,521.46 = 420,868.77 : x
  2. Step 2: Convert to fraction form
    743,156.33/1,025,521.46 = 420,868.77/x
  3. Step 3: Cross multiply
    743,156.33x = 1,025,521.46 × 420,868.77
  4. Step 4: Simplify right side
    743,156.33x = 431,609,951,107.01
  5. Step 5: Solve for x
    x = 431,609,951,107.01/743,156.33
  6. Step 6: Final answer
    x = 580,779.49

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Double scale
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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.