Home / 810,627.82-1,118,670.78-443,105.45

Finding the Fourth Proportional to 810,627.82, 1,118,670.78 and 443,105.45

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Solution

The fourth proportional to 810,627.82, 1,118,670.78 and 443,105.45 is: 611,487.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,627.82 : 1,118,670.78 = 443,105.45 : x
  2. Step 2: Convert to fraction form
    810,627.82/1,118,670.78 = 443,105.45/x
  3. Step 3: Cross multiply
    810,627.82x = 1,118,670.78 × 443,105.45
  4. Step 4: Simplify right side
    810,627.82x = 495,689,125,929.58
  5. Step 5: Solve for x
    x = 495,689,125,929.58/810,627.82
  6. Step 6: Final answer
    x = 611,487.93

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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.