Home / 1,224,676.80-1,690,048.80-688,132.80

Finding the Fourth Proportional to 1,224,676.80, 1,690,048.80 and 688,132.80

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Solution

The fourth proportional to 1,224,676.80, 1,690,048.80 and 688,132.80 is: 949,620.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,676.80 : 1,690,048.80 = 688,132.80 : x
  2. Step 2: Convert to fraction form
    1,224,676.80/1,690,048.80 = 688,132.80/x
  3. Step 3: Cross multiply
    1,224,676.80x = 1,690,048.80 × 688,132.80
  4. Step 4: Simplify right side
    1,224,676.80x = 1,162,978,012,880.64
  5. Step 5: Solve for x
    x = 1,162,978,012,880.64/1,224,676.80
  6. Step 6: Final answer
    x = 949,620.35

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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.