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Finding the Fourth Proportional to 928,164, 1,278,470.33 and 655,758.87

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Solution

The fourth proportional to 928,164, 1,278,470.33 and 655,758.87 is: 903,254.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,164 : 1,278,470.33 = 655,758.87 : x
  2. Step 2: Convert to fraction form
    928,164/1,278,470.33 = 655,758.87/x
  3. Step 3: Cross multiply
    928,164x = 1,278,470.33 × 655,758.87
  4. Step 4: Simplify right side
    928,164x = 838,368,255,650.53
  5. Step 5: Solve for x
    x = 838,368,255,650.53/928,164
  6. Step 6: Final answer
    x = 903,254.44

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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.