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Finding the Fourth Proportional to 454,275.78, 626,857.74 and 267,978.21

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Solution

The fourth proportional to 454,275.78, 626,857.74 and 267,978.21 is: 369,784.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,275.78 : 626,857.74 = 267,978.21 : x
  2. Step 2: Convert to fraction form
    454,275.78/626,857.74 = 267,978.21/x
  3. Step 3: Cross multiply
    454,275.78x = 626,857.74 × 267,978.21
  4. Step 4: Simplify right side
    454,275.78x = 167,984,215,089.85
  5. Step 5: Solve for x
    x = 167,984,215,089.85/454,275.78
  6. Step 6: Final answer
    x = 369,784.66

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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.