Home / 813,469.72-1,122,586.28-445,946.21

Finding the Fourth Proportional to 813,469.72, 1,122,586.28 and 445,946.21

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Solution

The fourth proportional to 813,469.72, 1,122,586.28 and 445,946.21 is: 615,404.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,469.72 : 1,122,586.28 = 445,946.21 : x
  2. Step 2: Convert to fraction form
    813,469.72/1,122,586.28 = 445,946.21/x
  3. Step 3: Cross multiply
    813,469.72x = 1,122,586.28 × 445,946.21
  4. Step 4: Simplify right side
    813,469.72x = 500,613,089,121.34
  5. Step 5: Solve for x
    x = 500,613,089,121.34/813,469.72
  6. Step 6: Final answer
    x = 615,404.70

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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.