Home / 765,994.11-1,148,399.05-386,719.60

Finding the Fourth Proportional to 765,994.11, 1,148,399.05 and 386,719.60

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Solution

The fourth proportional to 765,994.11, 1,148,399.05 and 386,719.60 is: 579,780.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,994.11 : 1,148,399.05 = 386,719.60 : x
  2. Step 2: Convert to fraction form
    765,994.11/1,148,399.05 = 386,719.60/x
  3. Step 3: Cross multiply
    765,994.11x = 1,148,399.05 × 386,719.60
  4. Step 4: Simplify right side
    765,994.11x = 444,108,421,256.38
  5. Step 5: Solve for x
    x = 444,108,421,256.38/765,994.11
  6. Step 6: Final answer
    x = 579,780.46

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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.