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Finding the Fourth Proportional to 625,661.56, 938,726.88 and 288,863.56

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Solution

The fourth proportional to 625,661.56, 938,726.88 and 288,863.56 is: 433,403.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,661.56 : 938,726.88 = 288,863.56 : x
  2. Step 2: Convert to fraction form
    625,661.56/938,726.88 = 288,863.56/x
  3. Step 3: Cross multiply
    625,661.56x = 938,726.88 × 288,863.56
  4. Step 4: Simplify right side
    625,661.56x = 271,163,988,424.49
  5. Step 5: Solve for x
    x = 271,163,988,424.49/625,661.56
  6. Step 6: Final answer
    x = 433,403.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.