Home / 722,778.15-997,432.87-400,509.12

Finding the Fourth Proportional to 722,778.15, 997,432.87 and 400,509.12

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Solution

The fourth proportional to 722,778.15, 997,432.87 and 400,509.12 is: 552,702.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,778.15 : 997,432.87 = 400,509.12 : x
  2. Step 2: Convert to fraction form
    722,778.15/997,432.87 = 400,509.12/x
  3. Step 3: Cross multiply
    722,778.15x = 997,432.87 × 400,509.12
  4. Step 4: Simplify right side
    722,778.15x = 399,480,961,022.77
  5. Step 5: Solve for x
    x = 399,480,961,022.77/722,778.15
  6. Step 6: Final answer
    x = 552,702.04

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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.