Home / 1,288,655.52-1,778,287.08-772,694.20

Finding the Fourth Proportional to 1,288,655.52, 1,778,287.08 and 772,694.20

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Solution

The fourth proportional to 1,288,655.52, 1,778,287.08 and 772,694.20 is: 1,066,283.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,655.52 : 1,778,287.08 = 772,694.20 : x
  2. Step 2: Convert to fraction form
    1,288,655.52/1,778,287.08 = 772,694.20/x
  3. Step 3: Cross multiply
    1,288,655.52x = 1,778,287.08 × 772,694.20
  4. Step 4: Simplify right side
    1,288,655.52x = 1,374,072,112,650.94
  5. Step 5: Solve for x
    x = 1,374,072,112,650.94/1,288,655.52
  6. Step 6: Final answer
    x = 1,066,283.50

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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.