Home / 1,120,007.90-1,680,003.93-321,290.30

Finding the Fourth Proportional to 1,120,007.90, 1,680,003.93 and 321,290.30

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Solution

The fourth proportional to 1,120,007.90, 1,680,003.93 and 321,290.30 is: 481,933.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,007.90 : 1,680,003.93 = 321,290.30 : x
  2. Step 2: Convert to fraction form
    1,120,007.90/1,680,003.93 = 321,290.30/x
  3. Step 3: Cross multiply
    1,120,007.90x = 1,680,003.93 × 321,290.30
  4. Step 4: Simplify right side
    1,120,007.90x = 539,768,966,670.88
  5. Step 5: Solve for x
    x = 539,768,966,670.88/1,120,007.90
  6. Step 6: Final answer
    x = 481,933.18

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1.5x scale

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.