Home / 722,976.21-997,707.15-400,734.72

Finding the Fourth Proportional to 722,976.21, 997,707.15 and 400,734.72

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Solution

The fourth proportional to 722,976.21, 997,707.15 and 400,734.72 is: 553,013.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,976.21 : 997,707.15 = 400,734.72 : x
  2. Step 2: Convert to fraction form
    722,976.21/997,707.15 = 400,734.72/x
  3. Step 3: Cross multiply
    722,976.21x = 997,707.15 × 400,734.72
  4. Step 4: Simplify right side
    722,976.21x = 399,815,895,397.25
  5. Step 5: Solve for x
    x = 399,815,895,397.25/722,976.21
  6. Step 6: Final answer
    x = 553,013.90

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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.