Home / 920,121.80-1,380,701.10-359,083.40

Finding the Fourth Proportional to 920,121.80, 1,380,701.10 and 359,083.40

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Solution

The fourth proportional to 920,121.80, 1,380,701.10 and 359,083.40 is: 538,827.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,121.80 : 1,380,701.10 = 359,083.40 : x
  2. Step 2: Convert to fraction form
    920,121.80/1,380,701.10 = 359,083.40/x
  3. Step 3: Cross multiply
    920,121.80x = 1,380,701.10 × 359,083.40
  4. Step 4: Simplify right side
    920,121.80x = 495,786,845,371.74
  5. Step 5: Solve for x
    x = 495,786,845,371.74/920,121.80
  6. Step 6: Final answer
    x = 538,827.41

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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.