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Finding the Fourth Proportional to 621,560.43, 857,510.48 and 349,565.94

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Solution

The fourth proportional to 621,560.43, 857,510.48 and 349,565.94 is: 482,264.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,560.43 : 857,510.48 = 349,565.94 : x
  2. Step 2: Convert to fraction form
    621,560.43/857,510.48 = 349,565.94/x
  3. Step 3: Cross multiply
    621,560.43x = 857,510.48 × 349,565.94
  4. Step 4: Simplify right side
    621,560.43x = 299,756,455,253.22
  5. Step 5: Solve for x
    x = 299,756,455,253.22/621,560.43
  6. Step 6: Final answer
    x = 482,264.38

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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.