Home / 839,814,955.20-1,259,722,432.80-379,768,132.80

Finding the Fourth Proportional to 839,814,955.20, 1,259,722,432.80 and 379,768,132.80

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Solution

The fourth proportional to 839,814,955.20, 1,259,722,432.80 and 379,768,132.80 is: 569,652,199.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,814,955.20 : 1,259,722,432.80 = 379,768,132.80 : x
  2. Step 2: Convert to fraction form
    839,814,955.20/1,259,722,432.80 = 379,768,132.80/x
  3. Step 3: Cross multiply
    839,814,955.20x = 1,259,722,432.80 × 379,768,132.80
  4. Step 4: Simplify right side
    839,814,955.20x = 478,402,436,150,729,472
  5. Step 5: Solve for x
    x = 478,402,436,150,729,472/839,814,955.20
  6. Step 6: Final answer
    x = 569,652,199.20

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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.