Home / 499,439.07-689,057.26-284,426.90

Finding the Fourth Proportional to 499,439.07, 689,057.26 and 284,426.90

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Solution

The fourth proportional to 499,439.07, 689,057.26 and 284,426.90 is: 392,413.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,439.07 : 689,057.26 = 284,426.90 : x
  2. Step 2: Convert to fraction form
    499,439.07/689,057.26 = 284,426.90/x
  3. Step 3: Cross multiply
    499,439.07x = 689,057.26 × 284,426.90
  4. Step 4: Simplify right side
    499,439.07x = 195,986,419,878.51
  5. Step 5: Solve for x
    x = 195,986,419,878.51/499,439.07
  6. Step 6: Final answer
    x = 392,413.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.