Home / 1,991,445.71-2,748,165.56-1,120,214.62

Finding the Fourth Proportional to 1,991,445.71, 2,748,165.56 and 1,120,214.62

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Solution

The fourth proportional to 1,991,445.71, 2,748,165.56 and 1,120,214.62 is: 1,545,879.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,445.71 : 2,748,165.56 = 1,120,214.62 : x
  2. Step 2: Convert to fraction form
    1,991,445.71/2,748,165.56 = 1,120,214.62/x
  3. Step 3: Cross multiply
    1,991,445.71x = 2,748,165.56 × 1,120,214.62
  4. Step 4: Simplify right side
    1,991,445.71x = 3,078,535,238,492.49
  5. Step 5: Solve for x
    x = 3,078,535,238,492.49/1,991,445.71
  6. Step 6: Final answer
    x = 1,545,879.57

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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.