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Finding the Fourth Proportional to 612,168.94, 845,028.55 and 408,145.43

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Solution

The fourth proportional to 612,168.94, 845,028.55 and 408,145.43 is: 563,397.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,168.94 : 845,028.55 = 408,145.43 : x
  2. Step 2: Convert to fraction form
    612,168.94/845,028.55 = 408,145.43/x
  3. Step 3: Cross multiply
    612,168.94x = 845,028.55 × 408,145.43
  4. Step 4: Simplify right side
    612,168.94x = 344,894,543,524.78
  5. Step 5: Solve for x
    x = 344,894,543,524.78/612,168.94
  6. Step 6: Final answer
    x = 563,397.65

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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.