Home / 768,040.70-1,152,061.05-687,170.30

Finding the Fourth Proportional to 768,040.70, 1,152,061.05 and 687,170.30

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Solution

The fourth proportional to 768,040.70, 1,152,061.05 and 687,170.30 is: 1,030,755.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,040.70 : 1,152,061.05 = 687,170.30 : x
  2. Step 2: Convert to fraction form
    768,040.70/1,152,061.05 = 687,170.30/x
  3. Step 3: Cross multiply
    768,040.70x = 1,152,061.05 × 687,170.30
  4. Step 4: Simplify right side
    768,040.70x = 791,662,137,346.82
  5. Step 5: Solve for x
    x = 791,662,137,346.82/768,040.70
  6. Step 6: Final answer
    x = 1,030,755.45

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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.