Home / 458,515.20-686,460.60-406,027.20

Finding the Fourth Proportional to 458,515.20, 686,460.60 and 406,027.20

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Solution

The fourth proportional to 458,515.20, 686,460.60 and 406,027.20 is: 607,878.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,515.20 : 686,460.60 = 406,027.20 : x
  2. Step 2: Convert to fraction form
    458,515.20/686,460.60 = 406,027.20/x
  3. Step 3: Cross multiply
    458,515.20x = 686,460.60 × 406,027.20
  4. Step 4: Simplify right side
    458,515.20x = 278,721,675,328.32
  5. Step 5: Solve for x
    x = 278,721,675,328.32/458,515.20
  6. Step 6: Final answer
    x = 607,878.81

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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.