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Finding the Fourth Proportional to 915,776.80, 1,371,040.80 and 889,532.80

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Solution

The fourth proportional to 915,776.80, 1,371,040.80 and 889,532.80 is: 1,331,750.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,776.80 : 1,371,040.80 = 889,532.80 : x
  2. Step 2: Convert to fraction form
    915,776.80/1,371,040.80 = 889,532.80/x
  3. Step 3: Cross multiply
    915,776.80x = 1,371,040.80 × 889,532.80
  4. Step 4: Simplify right side
    915,776.80x = 1,219,585,761,738.24
  5. Step 5: Solve for x
    x = 1,219,585,761,738.24/915,776.80
  6. Step 6: Final answer
    x = 1,331,750.01

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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.