Home / 1,260,722.90-1,739,801.69-687,775.07

Finding the Fourth Proportional to 1,260,722.90, 1,739,801.69 and 687,775.07

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Solution

The fourth proportional to 1,260,722.90, 1,739,801.69 and 687,775.07 is: 949,131.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,722.90 : 1,739,801.69 = 687,775.07 : x
  2. Step 2: Convert to fraction form
    1,260,722.90/1,739,801.69 = 687,775.07/x
  3. Step 3: Cross multiply
    1,260,722.90x = 1,739,801.69 × 687,775.07
  4. Step 4: Simplify right side
    1,260,722.90x = 1,196,592,216,987.98
  5. Step 5: Solve for x
    x = 1,196,592,216,987.98/1,260,722.90
  6. Step 6: Final answer
    x = 949,131.82

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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.