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Finding the Fourth Proportional to 555,911.20, 767,239.73 and 351,981.04

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Solution

The fourth proportional to 555,911.20, 767,239.73 and 351,981.04 is: 485,785.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,911.20 : 767,239.73 = 351,981.04 : x
  2. Step 2: Convert to fraction form
    555,911.20/767,239.73 = 351,981.04/x
  3. Step 3: Cross multiply
    555,911.20x = 767,239.73 × 351,981.04
  4. Step 4: Simplify right side
    555,911.20x = 270,053,838,094.72
  5. Step 5: Solve for x
    x = 270,053,838,094.72/555,911.20
  6. Step 6: Final answer
    x = 485,785.93

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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.