Home / 2,188,307.40-3,280,905.90-990,803.40

Finding the Fourth Proportional to 2,188,307.40, 3,280,905.90 and 990,803.40

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Solution

The fourth proportional to 2,188,307.40, 3,280,905.90 and 990,803.40 is: 1,485,500.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188,307.40 : 3,280,905.90 = 990,803.40 : x
  2. Step 2: Convert to fraction form
    2,188,307.40/3,280,905.90 = 990,803.40/x
  3. Step 3: Cross multiply
    2,188,307.40x = 3,280,905.90 × 990,803.40
  4. Step 4: Simplify right side
    2,188,307.40x = 3,250,732,720,800.06
  5. Step 5: Solve for x
    x = 3,250,732,720,800.06/2,188,307.40
  6. Step 6: Final answer
    x = 1,485,500.95

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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.