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Finding the Fourth Proportional to 702,691.89, 969,715.13 and 380,401.99

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Solution

The fourth proportional to 702,691.89, 969,715.13 and 380,401.99 is: 524,954.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,691.89 : 969,715.13 = 380,401.99 : x
  2. Step 2: Convert to fraction form
    702,691.89/969,715.13 = 380,401.99/x
  3. Step 3: Cross multiply
    702,691.89x = 969,715.13 × 380,401.99
  4. Step 4: Simplify right side
    702,691.89x = 368,881,565,185.11
  5. Step 5: Solve for x
    x = 368,881,565,185.11/702,691.89
  6. Step 6: Final answer
    x = 524,954.92

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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.