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Finding the Fourth Proportional to 781,700.79, 1,078,255.89 and 600,136.05

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Solution

The fourth proportional to 781,700.79, 1,078,255.89 and 600,136.05 is: 827,810.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,700.79 : 1,078,255.89 = 600,136.05 : x
  2. Step 2: Convert to fraction form
    781,700.79/1,078,255.89 = 600,136.05/x
  3. Step 3: Cross multiply
    781,700.79x = 1,078,255.89 × 600,136.05
  4. Step 4: Simplify right side
    781,700.79x = 647,100,230,713.84
  5. Step 5: Solve for x
    x = 647,100,230,713.84/781,700.79
  6. Step 6: Final answer
    x = 827,810.64

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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.