Home / 1,381,933.76-1,906,989.90-761,615.84

Finding the Fourth Proportional to 1,381,933.76, 1,906,989.90 and 761,615.84

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Solution

The fourth proportional to 1,381,933.76, 1,906,989.90 and 761,615.84 is: 1,050,986.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381,933.76 : 1,906,989.90 = 761,615.84 : x
  2. Step 2: Convert to fraction form
    1,381,933.76/1,906,989.90 = 761,615.84/x
  3. Step 3: Cross multiply
    1,381,933.76x = 1,906,989.90 × 761,615.84
  4. Step 4: Simplify right side
    1,381,933.76x = 1,452,393,714,560.02
  5. Step 5: Solve for x
    x = 1,452,393,714,560.02/1,381,933.76
  6. Step 6: Final answer
    x = 1,050,986.49

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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.