Home / 1,161,989.49-1,603,443.19-645,710.55

Finding the Fourth Proportional to 1,161,989.49, 1,603,443.19 and 645,710.55

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Solution

The fourth proportional to 1,161,989.49, 1,603,443.19 and 645,710.55 is: 891,023.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161,989.49 : 1,603,443.19 = 645,710.55 : x
  2. Step 2: Convert to fraction form
    1,161,989.49/1,603,443.19 = 645,710.55/x
  3. Step 3: Cross multiply
    1,161,989.49x = 1,603,443.19 × 645,710.55
  4. Step 4: Simplify right side
    1,161,989.49x = 1,035,360,184,108.65
  5. Step 5: Solve for x
    x = 1,035,360,184,108.65/1,161,989.49
  6. Step 6: Final answer
    x = 891,023.71

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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.