Home / 1,289,417.80-1,778,989.14-773,065.48

Finding the Fourth Proportional to 1,289,417.80, 1,778,989.14 and 773,065.48

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Solution

The fourth proportional to 1,289,417.80, 1,778,989.14 and 773,065.48 is: 1,066,586.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,417.80 : 1,778,989.14 = 773,065.48 : x
  2. Step 2: Convert to fraction form
    1,289,417.80/1,778,989.14 = 773,065.48/x
  3. Step 3: Cross multiply
    1,289,417.80x = 1,778,989.14 × 773,065.48
  4. Step 4: Simplify right side
    1,289,417.80x = 1,375,275,093,428.89
  5. Step 5: Solve for x
    x = 1,375,275,093,428.89/1,289,417.80
  6. Step 6: Final answer
    x = 1,066,586.09

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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.