Home / 1,223,287.88-1,688,137.27-686,743.88

Finding the Fourth Proportional to 1,223,287.88, 1,688,137.27 and 686,743.88

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Solution

The fourth proportional to 1,223,287.88, 1,688,137.27 and 686,743.88 is: 947,706.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,287.88 : 1,688,137.27 = 686,743.88 : x
  2. Step 2: Convert to fraction form
    1,223,287.88/1,688,137.27 = 686,743.88/x
  3. Step 3: Cross multiply
    1,223,287.88x = 1,688,137.27 × 686,743.88
  4. Step 4: Simplify right side
    1,223,287.88x = 1,159,317,928,614.86
  5. Step 5: Solve for x
    x = 1,159,317,928,614.86/1,223,287.88
  6. Step 6: Final answer
    x = 947,706.55

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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.