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Finding the Fourth Proportional to 621,282.02, 857,352.06 and 349,342.92

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Solution

The fourth proportional to 621,282.02, 857,352.06 and 349,342.92 is: 482,083.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,282.02 : 857,352.06 = 349,342.92 : x
  2. Step 2: Convert to fraction form
    621,282.02/857,352.06 = 349,342.92/x
  3. Step 3: Cross multiply
    621,282.02x = 857,352.06 × 349,342.92
  4. Step 4: Simplify right side
    621,282.02x = 299,509,872,108.42
  5. Step 5: Solve for x
    x = 299,509,872,108.42/621,282.02
  6. Step 6: Final answer
    x = 482,083.60

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1.5x scale

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.