Home / 1,640,978.39-2,264,663.81-915,967.24

Finding the Fourth Proportional to 1,640,978.39, 2,264,663.81 and 915,967.24

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Solution

The fourth proportional to 1,640,978.39, 2,264,663.81 and 915,967.24 is: 1,264,098.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640,978.39 : 2,264,663.81 = 915,967.24 : x
  2. Step 2: Convert to fraction form
    1,640,978.39/2,264,663.81 = 915,967.24/x
  3. Step 3: Cross multiply
    1,640,978.39x = 2,264,663.81 × 915,967.24
  4. Step 4: Simplify right side
    1,640,978.39x = 2,074,357,856,201.84
  5. Step 5: Solve for x
    x = 2,074,357,856,201.84/1,640,978.39
  6. Step 6: Final answer
    x = 1,264,098.21

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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.