Home / 724,997.25-1,000,512.14-398,314.53

Finding the Fourth Proportional to 724,997.25, 1,000,512.14 and 398,314.53

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Solution

The fourth proportional to 724,997.25, 1,000,512.14 and 398,314.53 is: 549,682.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,997.25 : 1,000,512.14 = 398,314.53 : x
  2. Step 2: Convert to fraction form
    724,997.25/1,000,512.14 = 398,314.53/x
  3. Step 3: Cross multiply
    724,997.25x = 1,000,512.14 × 398,314.53
  4. Step 4: Simplify right side
    724,997.25x = 398,518,520,811.82
  5. Step 5: Solve for x
    x = 398,518,520,811.82/724,997.25
  6. Step 6: Final answer
    x = 549,682.80

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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.