Home / 551,217.12-760,723.56-309,515.82

Finding the Fourth Proportional to 551,217.12, 760,723.56 and 309,515.82

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Solution

The fourth proportional to 551,217.12, 760,723.56 and 309,515.82 is: 427,156.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,217.12 : 760,723.56 = 309,515.82 : x
  2. Step 2: Convert to fraction form
    551,217.12/760,723.56 = 309,515.82/x
  3. Step 3: Cross multiply
    551,217.12x = 760,723.56 × 309,515.82
  4. Step 4: Simplify right side
    551,217.12x = 235,455,976,466.72
  5. Step 5: Solve for x
    x = 235,455,976,466.72/551,217.12
  6. Step 6: Final answer
    x = 427,156.50

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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.