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Finding the Fourth Proportional to 621,465.89, 857,494.35 and 363,292.97

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Solution

The fourth proportional to 621,465.89, 857,494.35 and 363,292.97 is: 501,269.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,465.89 : 857,494.35 = 363,292.97 : x
  2. Step 2: Convert to fraction form
    621,465.89/857,494.35 = 363,292.97/x
  3. Step 3: Cross multiply
    621,465.89x = 857,494.35 × 363,292.97
  4. Step 4: Simplify right side
    621,465.89x = 311,521,664,882.25
  5. Step 5: Solve for x
    x = 311,521,664,882.25/621,465.89
  6. Step 6: Final answer
    x = 501,269.13

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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.