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Finding the Fourth Proportional to 770,199.71, 1,062,793.77 and 425,980.95

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Solution

The fourth proportional to 770,199.71, 1,062,793.77 and 425,980.95 is: 587,808.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,199.71 : 1,062,793.77 = 425,980.95 : x
  2. Step 2: Convert to fraction form
    770,199.71/1,062,793.77 = 425,980.95/x
  3. Step 3: Cross multiply
    770,199.71x = 1,062,793.77 × 425,980.95
  4. Step 4: Simplify right side
    770,199.71x = 452,729,894,215.78
  5. Step 5: Solve for x
    x = 452,729,894,215.78/770,199.71
  6. Step 6: Final answer
    x = 587,808.45

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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.