Home / 856,974.45-1,285,058.78-316,857.55

Finding the Fourth Proportional to 856,974.45, 1,285,058.78 and 316,857.55

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Solution

The fourth proportional to 856,974.45, 1,285,058.78 and 316,857.55 is: 475,137.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,974.45 : 1,285,058.78 = 316,857.55 : x
  2. Step 2: Convert to fraction form
    856,974.45/1,285,058.78 = 316,857.55/x
  3. Step 3: Cross multiply
    856,974.45x = 1,285,058.78 × 316,857.55
  4. Step 4: Simplify right side
    856,974.45x = 407,180,574,079.11
  5. Step 5: Solve for x
    x = 407,180,574,079.11/856,974.45
  6. Step 6: Final answer
    x = 475,137.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.