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Finding the Fourth Proportional to 555,718.47, 766,892.30 and 301,069.65

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Solution

The fourth proportional to 555,718.47, 766,892.30 and 301,069.65 is: 415,476.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,718.47 : 766,892.30 = 301,069.65 : x
  2. Step 2: Convert to fraction form
    555,718.47/766,892.30 = 301,069.65/x
  3. Step 3: Cross multiply
    555,718.47x = 766,892.30 × 301,069.65
  4. Step 4: Simplify right side
    555,718.47x = 230,887,997,719.19
  5. Step 5: Solve for x
    x = 230,887,997,719.19/555,718.47
  6. Step 6: Final answer
    x = 415,476.56

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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.