Home / 1,281,007.10-1,920,882.80-427,785.50

Finding the Fourth Proportional to 1,281,007.10, 1,920,882.80 and 427,785.50

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Solution

The fourth proportional to 1,281,007.10, 1,920,882.80 and 427,785.50 is: 641,468.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,007.10 : 1,920,882.80 = 427,785.50 : x
  2. Step 2: Convert to fraction form
    1,281,007.10/1,920,882.80 = 427,785.50/x
  3. Step 3: Cross multiply
    1,281,007.10x = 1,920,882.80 × 427,785.50
  4. Step 4: Simplify right side
    1,281,007.10x = 821,725,814,911.07
  5. Step 5: Solve for x
    x = 821,725,814,911.07/1,281,007.10
  6. Step 6: Final answer
    x = 641,468.59

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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.