Home / 766,086.64-1,148,331.70-428,632.54

Finding the Fourth Proportional to 766,086.64, 1,148,331.70 and 428,632.54

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Solution

The fourth proportional to 766,086.64, 1,148,331.70 and 428,632.54 is: 642,502.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,086.64 : 1,148,331.70 = 428,632.54 : x
  2. Step 2: Convert to fraction form
    766,086.64/1,148,331.70 = 428,632.54/x
  3. Step 3: Cross multiply
    766,086.64x = 1,148,331.70 × 428,632.54
  4. Step 4: Simplify right side
    766,086.64x = 492,212,333,333.52
  5. Step 5: Solve for x
    x = 492,212,333,333.52/766,086.64
  6. Step 6: Final answer
    x = 642,502.18

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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.