Home / 749,587.92-1,122,580.20-428,767.20

Finding the Fourth Proportional to 749,587.92, 1,122,580.20 and 428,767.20

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Solution

The fourth proportional to 749,587.92, 1,122,580.20 and 428,767.20 is: 642,120.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,587.92 : 1,122,580.20 = 428,767.20 : x
  2. Step 2: Convert to fraction form
    749,587.92/1,122,580.20 = 428,767.20/x
  3. Step 3: Cross multiply
    749,587.92x = 1,122,580.20 × 428,767.20
  4. Step 4: Simplify right side
    749,587.92x = 481,325,569,129.44
  5. Step 5: Solve for x
    x = 481,325,569,129.44/749,587.92
  6. Step 6: Final answer
    x = 642,120.23

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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.