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Finding the Fourth Proportional to 646,133.40, 970,236.90 and 436,699.80

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Solution

The fourth proportional to 646,133.40, 970,236.90 and 436,699.80 is: 655,750.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,133.40 : 970,236.90 = 436,699.80 : x
  2. Step 2: Convert to fraction form
    646,133.40/970,236.90 = 436,699.80/x
  3. Step 3: Cross multiply
    646,133.40x = 970,236.90 × 436,699.80
  4. Step 4: Simplify right side
    646,133.40x = 423,702,260,182.62
  5. Step 5: Solve for x
    x = 423,702,260,182.62/646,133.40
  6. Step 6: Final answer
    x = 655,750.44

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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.