Home / 787,911.43-1,087,197.78-443,729.34

Finding the Fourth Proportional to 787,911.43, 1,087,197.78 and 443,729.34

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Solution

The fourth proportional to 787,911.43, 1,087,197.78 and 443,729.34 is: 612,278.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,911.43 : 1,087,197.78 = 443,729.34 : x
  2. Step 2: Convert to fraction form
    787,911.43/1,087,197.78 = 443,729.34/x
  3. Step 3: Cross multiply
    787,911.43x = 1,087,197.78 × 443,729.34
  4. Step 4: Simplify right side
    787,911.43x = 482,421,553,368.87
  5. Step 5: Solve for x
    x = 482,421,553,368.87/787,911.43
  6. Step 6: Final answer
    x = 612,278.91

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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.