Home / 790,901.50-1,091,438.25-428,316.94

Finding the Fourth Proportional to 790,901.50, 1,091,438.25 and 428,316.94

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Solution

The fourth proportional to 790,901.50, 1,091,438.25 and 428,316.94 is: 591,074.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,901.50 : 1,091,438.25 = 428,316.94 : x
  2. Step 2: Convert to fraction form
    790,901.50/1,091,438.25 = 428,316.94/x
  3. Step 3: Cross multiply
    790,901.50x = 1,091,438.25 × 428,316.94
  4. Step 4: Simplify right side
    790,901.50x = 467,481,491,438.96
  5. Step 5: Solve for x
    x = 467,481,491,438.96/790,901.50
  6. Step 6: Final answer
    x = 591,074.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.