Home / 722,013.14-996,374.72-390,868.23

Finding the Fourth Proportional to 722,013.14, 996,374.72 and 390,868.23

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Solution

The fourth proportional to 722,013.14, 996,374.72 and 390,868.23 is: 539,396.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,013.14 : 996,374.72 = 390,868.23 : x
  2. Step 2: Convert to fraction form
    722,013.14/996,374.72 = 390,868.23/x
  3. Step 3: Cross multiply
    722,013.14x = 996,374.72 × 390,868.23
  4. Step 4: Simplify right side
    722,013.14x = 389,451,227,936.72
  5. Step 5: Solve for x
    x = 389,451,227,936.72/722,013.14
  6. Step 6: Final answer
    x = 539,396.31

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Double scale
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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.