Home / 723,875.61-1,085,821.78-218,440.97

Finding the Fourth Proportional to 723,875.61, 1,085,821.78 and 218,440.97

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Solution

The fourth proportional to 723,875.61, 1,085,821.78 and 218,440.97 is: 327,663.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,875.61 : 1,085,821.78 = 218,440.97 : x
  2. Step 2: Convert to fraction form
    723,875.61/1,085,821.78 = 218,440.97/x
  3. Step 3: Cross multiply
    723,875.61x = 1,085,821.78 × 218,440.97
  4. Step 4: Simplify right side
    723,875.61x = 237,187,962,870.33
  5. Step 5: Solve for x
    x = 237,187,962,870.33/723,875.61
  6. Step 6: Final answer
    x = 327,663.98

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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.