Home / 856,077.90-1,284,201.78-316,475.56

Finding the Fourth Proportional to 856,077.90, 1,284,201.78 and 316,475.56

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Solution

The fourth proportional to 856,077.90, 1,284,201.78 and 316,475.56 is: 474,744.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,077.90 : 1,284,201.78 = 316,475.56 : x
  2. Step 2: Convert to fraction form
    856,077.90/1,284,201.78 = 316,475.56/x
  3. Step 3: Cross multiply
    856,077.90x = 1,284,201.78 × 316,475.56
  4. Step 4: Simplify right side
    856,077.90x = 406,418,477,478.50
  5. Step 5: Solve for x
    x = 406,418,477,478.50/856,077.90
  6. Step 6: Final answer
    x = 474,744.74

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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.