Home / 768,206.71-1,060,019.89-428,609.35

Finding the Fourth Proportional to 768,206.71, 1,060,019.89 and 428,609.35

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Solution

The fourth proportional to 768,206.71, 1,060,019.89 and 428,609.35 is: 591,422.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,206.71 : 1,060,019.89 = 428,609.35 : x
  2. Step 2: Convert to fraction form
    768,206.71/1,060,019.89 = 428,609.35/x
  3. Step 3: Cross multiply
    768,206.71x = 1,060,019.89 × 428,609.35
  4. Step 4: Simplify right side
    768,206.71x = 454,334,436,039.97
  5. Step 5: Solve for x
    x = 454,334,436,039.97/768,206.71
  6. Step 6: Final answer
    x = 591,422.11

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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.