Home / 3,120,841.12-4,680,783.60-990,649.12

Finding the Fourth Proportional to 3,120,841.12, 4,680,783.60 and 990,649.12

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Solution

The fourth proportional to 3,120,841.12, 4,680,783.60 and 990,649.12 is: 1,485,821.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,841.12 : 4,680,783.60 = 990,649.12 : x
  2. Step 2: Convert to fraction form
    3,120,841.12/4,680,783.60 = 990,649.12/x
  3. Step 3: Cross multiply
    3,120,841.12x = 4,680,783.60 × 990,649.12
  4. Step 4: Simplify right side
    3,120,841.12x = 4,637,014,154,250.43
  5. Step 5: Solve for x
    x = 4,637,014,154,250.43/3,120,841.12
  6. Step 6: Final answer
    x = 1,485,821.92

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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.