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Finding the Fourth Proportional to 631,289.60, 946,934.40 and 418,713.20

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Solution

The fourth proportional to 631,289.60, 946,934.40 and 418,713.20 is: 628,069.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,289.60 : 946,934.40 = 418,713.20 : x
  2. Step 2: Convert to fraction form
    631,289.60/946,934.40 = 418,713.20/x
  3. Step 3: Cross multiply
    631,289.60x = 946,934.40 × 418,713.20
  4. Step 4: Simplify right side
    631,289.60x = 396,493,932,814.08
  5. Step 5: Solve for x
    x = 396,493,932,814.08/631,289.60
  6. Step 6: Final answer
    x = 628,069.80

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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.