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Finding the Fourth Proportional to 638,882.32, 881,653.44 and 348,509.92

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Solution

The fourth proportional to 638,882.32, 881,653.44 and 348,509.92 is: 480,941.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,882.32 : 881,653.44 = 348,509.92 : x
  2. Step 2: Convert to fraction form
    638,882.32/881,653.44 = 348,509.92/x
  3. Step 3: Cross multiply
    638,882.32x = 881,653.44 × 348,509.92
  4. Step 4: Simplify right side
    638,882.32x = 307,264,969,842.13
  5. Step 5: Solve for x
    x = 307,264,969,842.13/638,882.32
  6. Step 6: Final answer
    x = 480,941.42

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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.