Home / 768,679.02-1,153,727.28-389,865.60

Finding the Fourth Proportional to 768,679.02, 1,153,727.28 and 389,865.60

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Solution

The fourth proportional to 768,679.02, 1,153,727.28 and 389,865.60 is: 585,157.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,679.02 : 1,153,727.28 = 389,865.60 : x
  2. Step 2: Convert to fraction form
    768,679.02/1,153,727.28 = 389,865.60/x
  3. Step 3: Cross multiply
    768,679.02x = 1,153,727.28 × 389,865.60
  4. Step 4: Simplify right side
    768,679.02x = 449,798,578,253.57
  5. Step 5: Solve for x
    x = 449,798,578,253.57/768,679.02
  6. Step 6: Final answer
    x = 585,157.87

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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.