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Finding the Fourth Proportional to 553,534.84, 763,860 and 349,694.29

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Solution

The fourth proportional to 553,534.84, 763,860 and 349,694.29 is: 482,566.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,534.84 : 763,860 = 349,694.29 : x
  2. Step 2: Convert to fraction form
    553,534.84/763,860 = 349,694.29/x
  3. Step 3: Cross multiply
    553,534.84x = 763,860 × 349,694.29
  4. Step 4: Simplify right side
    553,534.84x = 267,117,480,359.40
  5. Step 5: Solve for x
    x = 267,117,480,359.40/553,534.84
  6. Step 6: Final answer
    x = 482,566.70

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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.