Home / 712,023.62-982,398.28-405,988.38

Finding the Fourth Proportional to 712,023.62, 982,398.28 and 405,988.38

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Solution

The fourth proportional to 712,023.62, 982,398.28 and 405,988.38 is: 560,153.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,023.62 : 982,398.28 = 405,988.38 : x
  2. Step 2: Convert to fraction form
    712,023.62/982,398.28 = 405,988.38/x
  3. Step 3: Cross multiply
    712,023.62x = 982,398.28 × 405,988.38
  4. Step 4: Simplify right side
    712,023.62x = 398,842,286,211.99
  5. Step 5: Solve for x
    x = 398,842,286,211.99/712,023.62
  6. Step 6: Final answer
    x = 560,153.17

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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.