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Finding the Fourth Proportional to 635,417.13, 876,875.63 and 348,942

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Solution

The fourth proportional to 635,417.13, 876,875.63 and 348,942 is: 481,539.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,417.13 : 876,875.63 = 348,942 : x
  2. Step 2: Convert to fraction form
    635,417.13/876,875.63 = 348,942/x
  3. Step 3: Cross multiply
    635,417.13x = 876,875.63 × 348,942
  4. Step 4: Simplify right side
    635,417.13x = 305,978,736,083.46
  5. Step 5: Solve for x
    x = 305,978,736,083.46/635,417.13
  6. Step 6: Final answer
    x = 481,539.95

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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.