Home / 724,808.72-1,000,232.16-398,128.16

Finding the Fourth Proportional to 724,808.72, 1,000,232.16 and 398,128.16

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Solution

The fourth proportional to 724,808.72, 1,000,232.16 and 398,128.16 is: 549,414.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,808.72 : 1,000,232.16 = 398,128.16 : x
  2. Step 2: Convert to fraction form
    724,808.72/1,000,232.16 = 398,128.16/x
  3. Step 3: Cross multiply
    724,808.72x = 1,000,232.16 × 398,128.16
  4. Step 4: Simplify right side
    724,808.72x = 398,220,589,433.63
  5. Step 5: Solve for x
    x = 398,220,589,433.63/724,808.72
  6. Step 6: Final answer
    x = 549,414.73

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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.