Home / 722,913.40-997,660.19-400,616.57

Finding the Fourth Proportional to 722,913.40, 997,660.19 and 400,616.57

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Solution

The fourth proportional to 722,913.40, 997,660.19 and 400,616.57 is: 552,872.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,913.40 : 997,660.19 = 400,616.57 : x
  2. Step 2: Convert to fraction form
    722,913.40/997,660.19 = 400,616.57/x
  3. Step 3: Cross multiply
    722,913.40x = 997,660.19 × 400,616.57
  4. Step 4: Simplify right side
    722,913.40x = 399,679,206,839.04
  5. Step 5: Solve for x
    x = 399,679,206,839.04/722,913.40
  6. Step 6: Final answer
    x = 552,872.87

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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.