Home / 765,936-1,148,903.28-344,719.68

Finding the Fourth Proportional to 765,936, 1,148,903.28 and 344,719.68

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Solution

The fourth proportional to 765,936, 1,148,903.28 and 344,719.68 is: 517,079.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,936 : 1,148,903.28 = 344,719.68 : x
  2. Step 2: Convert to fraction form
    765,936/1,148,903.28 = 344,719.68/x
  3. Step 3: Cross multiply
    765,936x = 1,148,903.28 × 344,719.68
  4. Step 4: Simplify right side
    765,936x = 396,049,571,032.55
  5. Step 5: Solve for x
    x = 396,049,571,032.55/765,936
  6. Step 6: Final answer
    x = 517,079.20

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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.