Home / 829,715.60-1,245,187.80-331,437.20

Finding the Fourth Proportional to 829,715.60, 1,245,187.80 and 331,437.20

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Solution

The fourth proportional to 829,715.60, 1,245,187.80 and 331,437.20 is: 497,401.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,715.60 : 1,245,187.80 = 331,437.20 : x
  2. Step 2: Convert to fraction form
    829,715.60/1,245,187.80 = 331,437.20/x
  3. Step 3: Cross multiply
    829,715.60x = 1,245,187.80 × 331,437.20
  4. Step 4: Simplify right side
    829,715.60x = 412,701,557,906.16
  5. Step 5: Solve for x
    x = 412,701,557,906.16/829,715.60
  6. Step 6: Final answer
    x = 497,401.23

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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.