Home / 765,679.49-1,149,228.95-386,866.46

Finding the Fourth Proportional to 765,679.49, 1,149,228.95 and 386,866.46

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Solution

The fourth proportional to 765,679.49, 1,149,228.95 and 386,866.46 is: 580,658.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,679.49 : 1,149,228.95 = 386,866.46 : x
  2. Step 2: Convert to fraction form
    765,679.49/1,149,228.95 = 386,866.46/x
  3. Step 3: Cross multiply
    765,679.49x = 1,149,228.95 × 386,866.46
  4. Step 4: Simplify right side
    765,679.49x = 444,598,127,935.54
  5. Step 5: Solve for x
    x = 444,598,127,935.54/765,679.49
  6. Step 6: Final answer
    x = 580,658.27

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1.5x scale

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.