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Finding the Fourth Proportional to 547,643.76, 755,433 and 329,700.84

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Solution

The fourth proportional to 547,643.76, 755,433 and 329,700.84 is: 454,797.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,643.76 : 755,433 = 329,700.84 : x
  2. Step 2: Convert to fraction form
    547,643.76/755,433 = 329,700.84/x
  3. Step 3: Cross multiply
    547,643.76x = 755,433 × 329,700.84
  4. Step 4: Simplify right side
    547,643.76x = 249,066,894,663.72
  5. Step 5: Solve for x
    x = 249,066,894,663.72/547,643.76
  6. Step 6: Final answer
    x = 454,797.28

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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.