Home / 691,459.78-1,037,179.38-421,667.20

Finding the Fourth Proportional to 691,459.78, 1,037,179.38 and 421,667.20

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Solution

The fourth proportional to 691,459.78, 1,037,179.38 and 421,667.20 is: 632,494.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,459.78 : 1,037,179.38 = 421,667.20 : x
  2. Step 2: Convert to fraction form
    691,459.78/1,037,179.38 = 421,667.20/x
  3. Step 3: Cross multiply
    691,459.78x = 1,037,179.38 × 421,667.20
  4. Step 4: Simplify right side
    691,459.78x = 437,344,525,062.34
  5. Step 5: Solve for x
    x = 437,344,525,062.34/691,459.78
  6. Step 6: Final answer
    x = 632,494.52

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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.