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Finding the Fourth Proportional to 1,911,919.82, 2,868,482.52 and 901,000.94

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Solution

The fourth proportional to 1,911,919.82, 2,868,482.52 and 901,000.94 is: 1,351,785.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911,919.82 : 2,868,482.52 = 901,000.94 : x
  2. Step 2: Convert to fraction form
    1,911,919.82/2,868,482.52 = 901,000.94/x
  3. Step 3: Cross multiply
    1,911,919.82x = 2,868,482.52 × 901,000.94
  4. Step 4: Simplify right side
    1,911,919.82x = 2,584,505,432,551.16
  5. Step 5: Solve for x
    x = 2,584,505,432,551.16/1,911,919.82
  6. Step 6: Final answer
    x = 1,351,785.47

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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.