Home / 551,890.77-761,672.16-306,899.79

Finding the Fourth Proportional to 551,890.77, 761,672.16 and 306,899.79

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Solution

The fourth proportional to 551,890.77, 761,672.16 and 306,899.79 is: 423,556.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,890.77 : 761,672.16 = 306,899.79 : x
  2. Step 2: Convert to fraction form
    551,890.77/761,672.16 = 306,899.79/x
  3. Step 3: Cross multiply
    551,890.77x = 761,672.16 × 306,899.79
  4. Step 4: Simplify right side
    551,890.77x = 233,757,025,952.85
  5. Step 5: Solve for x
    x = 233,757,025,952.85/551,890.77
  6. Step 6: Final answer
    x = 423,556.69

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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.