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Finding the Fourth Proportional to 915,772.80, 1,371,034.80 and 889,528.80

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Solution

The fourth proportional to 915,772.80, 1,371,034.80 and 889,528.80 is: 1,331,744.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,772.80 : 1,371,034.80 = 889,528.80 : x
  2. Step 2: Convert to fraction form
    915,772.80/1,371,034.80 = 889,528.80/x
  3. Step 3: Cross multiply
    915,772.80x = 1,371,034.80 × 889,528.80
  4. Step 4: Simplify right side
    915,772.80x = 1,219,574,940,402.24
  5. Step 5: Solve for x
    x = 1,219,574,940,402.24/915,772.80
  6. Step 6: Final answer
    x = 1,331,744.01

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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.