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Finding the Fourth Proportional to 873,679.77, 1,309,984.45 and 340,578

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Solution

The fourth proportional to 873,679.77, 1,309,984.45 and 340,578 is: 510,658.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,679.77 : 1,309,984.45 = 340,578 : x
  2. Step 2: Convert to fraction form
    873,679.77/1,309,984.45 = 340,578/x
  3. Step 3: Cross multiply
    873,679.77x = 1,309,984.45 × 340,578
  4. Step 4: Simplify right side
    873,679.77x = 446,151,883,160.66
  5. Step 5: Solve for x
    x = 446,151,883,160.66/873,679.77
  6. Step 6: Final answer
    x = 510,658.37

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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.