Home / 1,378,051.30-2,066,931.15-431,371.90

Finding the Fourth Proportional to 1,378,051.30, 2,066,931.15 and 431,371.90

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Solution

The fourth proportional to 1,378,051.30, 2,066,931.15 and 431,371.90 is: 647,012.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,051.30 : 2,066,931.15 = 431,371.90 : x
  2. Step 2: Convert to fraction form
    1,378,051.30/2,066,931.15 = 431,371.90/x
  3. Step 3: Cross multiply
    1,378,051.30x = 2,066,931.15 × 431,371.90
  4. Step 4: Simplify right side
    1,378,051.30x = 891,616,017,344.69
  5. Step 5: Solve for x
    x = 891,616,017,344.69/1,378,051.30
  6. Step 6: Final answer
    x = 647,012.21

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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.