Home / 1,224,019.88-1,689,125-680,145.76

Finding the Fourth Proportional to 1,224,019.88, 1,689,125 and 680,145.76

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Solution

The fourth proportional to 1,224,019.88, 1,689,125 and 680,145.76 is: 938,588.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,019.88 : 1,689,125 = 680,145.76 : x
  2. Step 2: Convert to fraction form
    1,224,019.88/1,689,125 = 680,145.76/x
  3. Step 3: Cross multiply
    1,224,019.88x = 1,689,125 × 680,145.76
  4. Step 4: Simplify right side
    1,224,019.88x = 1,148,851,206,860
  5. Step 5: Solve for x
    x = 1,148,851,206,860/1,224,019.88
  6. Step 6: Final answer
    x = 938,588.68

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Double scale
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1.5x scale

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.