Home / 921,384.87-1,382,188.07-870,996.39

Finding the Fourth Proportional to 921,384.87, 1,382,188.07 and 870,996.39

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Solution

The fourth proportional to 921,384.87, 1,382,188.07 and 870,996.39 is: 1,306,599.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,384.87 : 1,382,188.07 = 870,996.39 : x
  2. Step 2: Convert to fraction form
    921,384.87/1,382,188.07 = 870,996.39/x
  3. Step 3: Cross multiply
    921,384.87x = 1,382,188.07 × 870,996.39
  4. Step 4: Simplify right side
    921,384.87x = 1,203,880,814,916.09
  5. Step 5: Solve for x
    x = 1,203,880,814,916.09/921,384.87
  6. Step 6: Final answer
    x = 1,306,599.29

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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.