Home / 722,974.20-997,704.40-400,732.72

Finding the Fourth Proportional to 722,974.20, 997,704.40 and 400,732.72

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Solution

The fourth proportional to 722,974.20, 997,704.40 and 400,732.72 is: 553,011.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,974.20 : 997,704.40 = 400,732.72 : x
  2. Step 2: Convert to fraction form
    722,974.20/997,704.40 = 400,732.72/x
  3. Step 3: Cross multiply
    722,974.20x = 997,704.40 × 400,732.72
  4. Step 4: Simplify right side
    722,974.20x = 399,812,797,967.97
  5. Step 5: Solve for x
    x = 399,812,797,967.97/722,974.20
  6. Step 6: Final answer
    x = 553,011.16

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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.