Home / 1,098,989.95-1,648,679.33-389,429.95

Finding the Fourth Proportional to 1,098,989.95, 1,648,679.33 and 389,429.95

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Solution

The fourth proportional to 1,098,989.95, 1,648,679.33 and 389,429.95 is: 584,213.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,989.95 : 1,648,679.33 = 389,429.95 : x
  2. Step 2: Convert to fraction form
    1,098,989.95/1,648,679.33 = 389,429.95/x
  3. Step 3: Cross multiply
    1,098,989.95x = 1,648,679.33 × 389,429.95
  4. Step 4: Simplify right side
    1,098,989.95x = 642,045,107,100.78
  5. Step 5: Solve for x
    x = 642,045,107,100.78/1,098,989.95
  6. Step 6: Final answer
    x = 584,213.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.