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Finding the Fourth Proportional to 1,920,287.98, 2,879,764.93 and 1,068,659.25

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Solution

The fourth proportional to 1,920,287.98, 2,879,764.93 and 1,068,659.25 is: 1,602,617.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920,287.98 : 2,879,764.93 = 1,068,659.25 : x
  2. Step 2: Convert to fraction form
    1,920,287.98/2,879,764.93 = 1,068,659.25/x
  3. Step 3: Cross multiply
    1,920,287.98x = 2,879,764.93 × 1,068,659.25
  4. Step 4: Simplify right side
    1,920,287.98x = 3,077,487,430,270.10
  5. Step 5: Solve for x
    x = 3,077,487,430,270.10/1,920,287.98
  6. Step 6: Final answer
    x = 1,602,617.66

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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.