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Finding the Fourth Proportional to 859,570.71, 1,289,398.90 and 327,133

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Solution

The fourth proportional to 859,570.71, 1,289,398.90 and 327,133 is: 490,715.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,570.71 : 1,289,398.90 = 327,133 : x
  2. Step 2: Convert to fraction form
    859,570.71/1,289,398.90 = 327,133/x
  3. Step 3: Cross multiply
    859,570.71x = 1,289,398.90 × 327,133
  4. Step 4: Simplify right side
    859,570.71x = 421,804,930,353.70
  5. Step 5: Solve for x
    x = 421,804,930,353.70/859,570.71
  6. Step 6: Final answer
    x = 490,715.80

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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.