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Finding the Fourth Proportional to 638,347.14, 880,924.98 and 351,877.47

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Solution

The fourth proportional to 638,347.14, 880,924.98 and 351,877.47 is: 485,594.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,347.14 : 880,924.98 = 351,877.47 : x
  2. Step 2: Convert to fraction form
    638,347.14/880,924.98 = 351,877.47/x
  3. Step 3: Cross multiply
    638,347.14x = 880,924.98 × 351,877.47
  4. Step 4: Simplify right side
    638,347.14x = 309,977,653,222.20
  5. Step 5: Solve for x
    x = 309,977,653,222.20/638,347.14
  6. Step 6: Final answer
    x = 485,594.18

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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.