Home / 1,120,006.90-1,680,002.43-321,289.30

Finding the Fourth Proportional to 1,120,006.90, 1,680,002.43 and 321,289.30

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Solution

The fourth proportional to 1,120,006.90, 1,680,002.43 and 321,289.30 is: 481,931.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,006.90 : 1,680,002.43 = 321,289.30 : x
  2. Step 2: Convert to fraction form
    1,120,006.90/1,680,002.43 = 321,289.30/x
  3. Step 3: Cross multiply
    1,120,006.90x = 1,680,002.43 × 321,289.30
  4. Step 4: Simplify right side
    1,120,006.90x = 539,766,804,733.00
  5. Step 5: Solve for x
    x = 539,766,804,733.00/1,120,006.90
  6. Step 6: Final answer
    x = 481,931.68

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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.