Home / 1,315,127.28-1,970,946.99-675,405.21

Finding the Fourth Proportional to 1,315,127.28, 1,970,946.99 and 675,405.21

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Solution

The fourth proportional to 1,315,127.28, 1,970,946.99 and 675,405.21 is: 1,012,212.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,127.28 : 1,970,946.99 = 675,405.21 : x
  2. Step 2: Convert to fraction form
    1,315,127.28/1,970,946.99 = 675,405.21/x
  3. Step 3: Cross multiply
    1,315,127.28x = 1,970,946.99 × 675,405.21
  4. Step 4: Simplify right side
    1,315,127.28x = 1,331,187,865,679.82
  5. Step 5: Solve for x
    x = 1,331,187,865,679.82/1,315,127.28
  6. Step 6: Final answer
    x = 1,012,212.19

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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.