Home / 638,423.35-881,018.45-351,943.44

Finding the Fourth Proportional to 638,423.35, 881,018.45 and 351,943.44

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Solution

The fourth proportional to 638,423.35, 881,018.45 and 351,943.44 is: 485,678.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,423.35 : 881,018.45 = 351,943.44 : x
  2. Step 2: Convert to fraction form
    638,423.35/881,018.45 = 351,943.44/x
  3. Step 3: Cross multiply
    638,423.35x = 881,018.45 × 351,943.44
  4. Step 4: Simplify right side
    638,423.35x = 310,068,662,236.75
  5. Step 5: Solve for x
    x = 310,068,662,236.75/638,423.35
  6. Step 6: Final answer
    x = 485,678.76

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1.5x scale

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.