Home / 1,353,721.20-1,868,005.08-809,746.80

Finding the Fourth Proportional to 1,353,721.20, 1,868,005.08 and 809,746.80

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Solution

The fourth proportional to 1,353,721.20, 1,868,005.08 and 809,746.80 is: 1,117,372.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353,721.20 : 1,868,005.08 = 809,746.80 : x
  2. Step 2: Convert to fraction form
    1,353,721.20/1,868,005.08 = 809,746.80/x
  3. Step 3: Cross multiply
    1,353,721.20x = 1,868,005.08 × 809,746.80
  4. Step 4: Simplify right side
    1,353,721.20x = 1,512,611,135,913.74
  5. Step 5: Solve for x
    x = 1,512,611,135,913.74/1,353,721.20
  6. Step 6: Final answer
    x = 1,117,372.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.