Home / 869,736.40-1,304,604.60-420,672.40

Finding the Fourth Proportional to 869,736.40, 1,304,604.60 and 420,672.40

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Solution

The fourth proportional to 869,736.40, 1,304,604.60 and 420,672.40 is: 631,008.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,736.40 : 1,304,604.60 = 420,672.40 : x
  2. Step 2: Convert to fraction form
    869,736.40/1,304,604.60 = 420,672.40/x
  3. Step 3: Cross multiply
    869,736.40x = 1,304,604.60 × 420,672.40
  4. Step 4: Simplify right side
    869,736.40x = 548,811,148,133.04
  5. Step 5: Solve for x
    x = 548,811,148,133.04/869,736.40
  6. Step 6: Final answer
    x = 631,008.60

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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.