Home / 722,875.26-997,589.72-400,555.20

Finding the Fourth Proportional to 722,875.26, 997,589.72 and 400,555.20

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Solution

The fourth proportional to 722,875.26, 997,589.72 and 400,555.20 is: 552,778.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,875.26 : 997,589.72 = 400,555.20 : x
  2. Step 2: Convert to fraction form
    722,875.26/997,589.72 = 400,555.20/x
  3. Step 3: Cross multiply
    722,875.26x = 997,589.72 × 400,555.20
  4. Step 4: Simplify right side
    722,875.26x = 399,589,749,812.54
  5. Step 5: Solve for x
    x = 399,589,749,812.54/722,875.26
  6. Step 6: Final answer
    x = 552,778.29

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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.