Home / 1,223,717.23-1,688,971.26-781,909.21

Finding the Fourth Proportional to 1,223,717.23, 1,688,971.26 and 781,909.21

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Solution

The fourth proportional to 1,223,717.23, 1,688,971.26 and 781,909.21 is: 1,079,189.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,717.23 : 1,688,971.26 = 781,909.21 : x
  2. Step 2: Convert to fraction form
    1,223,717.23/1,688,971.26 = 781,909.21/x
  3. Step 3: Cross multiply
    1,223,717.23x = 1,688,971.26 × 781,909.21
  4. Step 4: Simplify right side
    1,223,717.23x = 1,320,622,183,619.30
  5. Step 5: Solve for x
    x = 1,320,622,183,619.30/1,223,717.23
  6. Step 6: Final answer
    x = 1,079,189.01

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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.