Home / 628,933.20-943,399.80-418,981.20

Finding the Fourth Proportional to 628,933.20, 943,399.80 and 418,981.20

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Solution

The fourth proportional to 628,933.20, 943,399.80 and 418,981.20 is: 628,471.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,933.20 : 943,399.80 = 418,981.20 : x
  2. Step 2: Convert to fraction form
    628,933.20/943,399.80 = 418,981.20/x
  3. Step 3: Cross multiply
    628,933.20x = 943,399.80 × 418,981.20
  4. Step 4: Simplify right side
    628,933.20x = 395,266,780,283.76
  5. Step 5: Solve for x
    x = 395,266,780,283.76/628,933.20
  6. Step 6: Final answer
    x = 628,471.80

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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.