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Finding the Fourth Proportional to 928,239.84, 1,392,360.84 and 254,326.86

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Solution

The fourth proportional to 928,239.84, 1,392,360.84 and 254,326.86 is: 381,490.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,239.84 : 1,392,360.84 = 254,326.86 : x
  2. Step 2: Convert to fraction form
    928,239.84/1,392,360.84 = 254,326.86/x
  3. Step 3: Cross multiply
    928,239.84x = 1,392,360.84 × 254,326.86
  4. Step 4: Simplify right side
    928,239.84x = 354,114,760,424.16
  5. Step 5: Solve for x
    x = 354,114,760,424.16/928,239.84
  6. Step 6: Final answer
    x = 381,490.59

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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.