Home / 787,918.08-1,087,200.32-448,392

Finding the Fourth Proportional to 787,918.08, 1,087,200.32 and 448,392

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Solution

The fourth proportional to 787,918.08, 1,087,200.32 and 448,392 is: 618,708.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,918.08 : 1,087,200.32 = 448,392 : x
  2. Step 2: Convert to fraction form
    787,918.08/1,087,200.32 = 448,392/x
  3. Step 3: Cross multiply
    787,918.08x = 1,087,200.32 × 448,392
  4. Step 4: Simplify right side
    787,918.08x = 487,491,925,885.44
  5. Step 5: Solve for x
    x = 487,491,925,885.44/787,918.08
  6. Step 6: Final answer
    x = 618,708.90

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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.