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Finding the Fourth Proportional to 615,540.36, 849,488.40 and 343,661.76

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Solution

The fourth proportional to 615,540.36, 849,488.40 and 343,661.76 is: 474,277.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,540.36 : 849,488.40 = 343,661.76 : x
  2. Step 2: Convert to fraction form
    615,540.36/849,488.40 = 343,661.76/x
  3. Step 3: Cross multiply
    615,540.36x = 849,488.40 × 343,661.76
  4. Step 4: Simplify right side
    615,540.36x = 291,936,678,643.58
  5. Step 5: Solve for x
    x = 291,936,678,643.58/615,540.36
  6. Step 6: Final answer
    x = 474,277.07

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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.