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Finding the Fourth Proportional to 646,131.40, 970,233.90 and 436,697.80

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Solution

The fourth proportional to 646,131.40, 970,233.90 and 436,697.80 is: 655,747.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,131.40 : 970,233.90 = 436,697.80 : x
  2. Step 2: Convert to fraction form
    646,131.40/970,233.90 = 436,697.80/x
  3. Step 3: Cross multiply
    646,131.40x = 970,233.90 × 436,697.80
  4. Step 4: Simplify right side
    646,131.40x = 423,699,009,615.42
  5. Step 5: Solve for x
    x = 423,699,009,615.42/646,131.40
  6. Step 6: Final answer
    x = 655,747.44

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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.