Home / 1,855,487.64-2,781,518.91-1,287,136.89

Finding the Fourth Proportional to 1,855,487.64, 2,781,518.91 and 1,287,136.89

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Solution

The fourth proportional to 1,855,487.64, 2,781,518.91 and 1,287,136.89 is: 1,929,517.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,855,487.64 : 2,781,518.91 = 1,287,136.89 : x
  2. Step 2: Convert to fraction form
    1,855,487.64/2,781,518.91 = 1,287,136.89/x
  3. Step 3: Cross multiply
    1,855,487.64x = 2,781,518.91 × 1,287,136.89
  4. Step 4: Simplify right side
    1,855,487.64x = 3,580,195,599,293.59
  5. Step 5: Solve for x
    x = 3,580,195,599,293.59/1,855,487.64
  6. Step 6: Final answer
    x = 1,929,517.35

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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.