Home / 1,399,696.84-1,931,896.68-915,981.72

Finding the Fourth Proportional to 1,399,696.84, 1,931,896.68 and 915,981.72

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Solution

The fourth proportional to 1,399,696.84, 1,931,896.68 and 915,981.72 is: 1,264,260.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,696.84 : 1,931,896.68 = 915,981.72 : x
  2. Step 2: Convert to fraction form
    1,399,696.84/1,931,896.68 = 915,981.72/x
  3. Step 3: Cross multiply
    1,399,696.84x = 1,931,896.68 × 915,981.72
  4. Step 4: Simplify right side
    1,399,696.84x = 1,769,582,033,129.15
  5. Step 5: Solve for x
    x = 1,769,582,033,129.15/1,399,696.84
  6. Step 6: Final answer
    x = 1,264,260.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.