Home / 856,073.90-1,284,195.76-316,471.54

Finding the Fourth Proportional to 856,073.90, 1,284,195.76 and 316,471.54

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Solution

The fourth proportional to 856,073.90, 1,284,195.76 and 316,471.54 is: 474,738.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,073.90 : 1,284,195.76 = 316,471.54 : x
  2. Step 2: Convert to fraction form
    856,073.90/1,284,195.76 = 316,471.54/x
  3. Step 3: Cross multiply
    856,073.90x = 1,284,195.76 × 316,471.54
  4. Step 4: Simplify right side
    856,073.90x = 406,411,405,827.00
  5. Step 5: Solve for x
    x = 406,411,405,827.00/856,073.90
  6. Step 6: Final answer
    x = 474,738.70

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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.