Home / 1,218,531.42-1,681,625.91-674,667.21

Finding the Fourth Proportional to 1,218,531.42, 1,681,625.91 and 674,667.21

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Solution

The fourth proportional to 1,218,531.42, 1,681,625.91 and 674,667.21 is: 931,069.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,531.42 : 1,681,625.91 = 674,667.21 : x
  2. Step 2: Convert to fraction form
    1,218,531.42/1,681,625.91 = 674,667.21/x
  3. Step 3: Cross multiply
    1,218,531.42x = 1,681,625.91 × 674,667.21
  4. Step 4: Simplify right side
    1,218,531.42x = 1,134,537,869,799.51
  5. Step 5: Solve for x
    x = 1,134,537,869,799.51/1,218,531.42
  6. Step 6: Final answer
    x = 931,069.85

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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.