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Finding the Fourth Proportional to 720,521.10, 994,370.60 and 398,224.26

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Solution

The fourth proportional to 720,521.10, 994,370.60 and 398,224.26 is: 549,577.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,521.10 : 994,370.60 = 398,224.26 : x
  2. Step 2: Convert to fraction form
    720,521.10/994,370.60 = 398,224.26/x
  3. Step 3: Cross multiply
    720,521.10x = 994,370.60 × 398,224.26
  4. Step 4: Simplify right side
    720,521.10x = 395,982,496,350.76
  5. Step 5: Solve for x
    x = 395,982,496,350.76/720,521.10
  6. Step 6: Final answer
    x = 549,577.93

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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.