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Finding the Fourth Proportional to 615,676.71, 849,775.40 and 361,109.91

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Solution

The fourth proportional to 615,676.71, 849,775.40 and 361,109.91 is: 498,414.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,676.71 : 849,775.40 = 361,109.91 : x
  2. Step 2: Convert to fraction form
    615,676.71/849,775.40 = 361,109.91/x
  3. Step 3: Cross multiply
    615,676.71x = 849,775.40 × 361,109.91
  4. Step 4: Simplify right side
    615,676.71x = 306,862,316,408.66
  5. Step 5: Solve for x
    x = 306,862,316,408.66/615,676.71
  6. Step 6: Final answer
    x = 498,414.69

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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.