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Finding the Fourth Proportional to 770,206.72, 1,062,803.49 and 425,987.95

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Solution

The fourth proportional to 770,206.72, 1,062,803.49 and 425,987.95 is: 587,818.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,206.72 : 1,062,803.49 = 425,987.95 : x
  2. Step 2: Convert to fraction form
    770,206.72/1,062,803.49 = 425,987.95/x
  3. Step 3: Cross multiply
    770,206.72x = 1,062,803.49 × 425,987.95
  4. Step 4: Simplify right side
    770,206.72x = 452,741,479,957.95
  5. Step 5: Solve for x
    x = 452,741,479,957.95/770,206.72
  6. Step 6: Final answer
    x = 587,818.14

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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.