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Finding the Fourth Proportional to 621,374.32, 857,488.41 and 349,442.13

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Solution

The fourth proportional to 621,374.32, 857,488.41 and 349,442.13 is: 482,225.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,374.32 : 857,488.41 = 349,442.13 : x
  2. Step 2: Convert to fraction form
    621,374.32/857,488.41 = 349,442.13/x
  3. Step 3: Cross multiply
    621,374.32x = 857,488.41 × 349,442.13
  4. Step 4: Simplify right side
    621,374.32x = 299,642,576,440.71
  5. Step 5: Solve for x
    x = 299,642,576,440.71/621,374.32
  6. Step 6: Final answer
    x = 482,225.56

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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.