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Finding the Fourth Proportional to 647,276.80, 970,569.60 and 272,876.80

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Solution

The fourth proportional to 647,276.80, 970,569.60 and 272,876.80 is: 409,169.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,276.80 : 970,569.60 = 272,876.80 : x
  2. Step 2: Convert to fraction form
    647,276.80/970,569.60 = 272,876.80/x
  3. Step 3: Cross multiply
    647,276.80x = 970,569.60 × 272,876.80
  4. Step 4: Simplify right side
    647,276.80x = 264,845,926,625.28
  5. Step 5: Solve for x
    x = 264,845,926,625.28/647,276.80
  6. Step 6: Final answer
    x = 409,169.50

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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.