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Finding the Fourth Proportional to 482,856.28, 666,373.47 and 278,915.79

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Solution

The fourth proportional to 482,856.28, 666,373.47 and 278,915.79 is: 384,922.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,856.28 : 666,373.47 = 278,915.79 : x
  2. Step 2: Convert to fraction form
    482,856.28/666,373.47 = 278,915.79/x
  3. Step 3: Cross multiply
    482,856.28x = 666,373.47 × 278,915.79
  4. Step 4: Simplify right side
    482,856.28x = 185,862,082,820.09
  5. Step 5: Solve for x
    x = 185,862,082,820.09/482,856.28
  6. Step 6: Final answer
    x = 384,922.16

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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.