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Finding the Fourth Proportional to 646,136.42, 891,652.84 and 359,650.34

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Solution

The fourth proportional to 646,136.42, 891,652.84 and 359,650.34 is: 496,308.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,136.42 : 891,652.84 = 359,650.34 : x
  2. Step 2: Convert to fraction form
    646,136.42/891,652.84 = 359,650.34/x
  3. Step 3: Cross multiply
    646,136.42x = 891,652.84 × 359,650.34
  4. Step 4: Simplify right side
    646,136.42x = 320,683,247,067.97
  5. Step 5: Solve for x
    x = 320,683,247,067.97/646,136.42
  6. Step 6: Final answer
    x = 496,308.89

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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.