Home / 5,129,507.70-7,078,667.40-2,806,378.26

Finding the Fourth Proportional to 5,129,507.70, 7,078,667.40 and 2,806,378.26

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Solution

The fourth proportional to 5,129,507.70, 7,078,667.40 and 2,806,378.26 is: 3,872,772.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129,507.70 : 7,078,667.40 = 2,806,378.26 : x
  2. Step 2: Convert to fraction form
    5,129,507.70/7,078,667.40 = 2,806,378.26/x
  3. Step 3: Cross multiply
    5,129,507.70x = 7,078,667.40 × 2,806,378.26
  4. Step 4: Simplify right side
    5,129,507.70x = 19,865,418,301,130.72
  5. Step 5: Solve for x
    x = 19,865,418,301,130.72/5,129,507.70
  6. Step 6: Final answer
    x = 3,872,772.88

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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.