Home / 651,397.20-976,512.60-426,865.20

Finding the Fourth Proportional to 651,397.20, 976,512.60 and 426,865.20

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Solution

The fourth proportional to 651,397.20, 976,512.60 and 426,865.20 is: 639,915.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,397.20 : 976,512.60 = 426,865.20 : x
  2. Step 2: Convert to fraction form
    651,397.20/976,512.60 = 426,865.20/x
  3. Step 3: Cross multiply
    651,397.20x = 976,512.60 × 426,865.20
  4. Step 4: Simplify right side
    651,397.20x = 416,839,246,301.52
  5. Step 5: Solve for x
    x = 416,839,246,301.52/651,397.20
  6. Step 6: Final answer
    x = 639,915.62

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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.