Home / 790,900.50-1,091,436.87-428,315.94

Finding the Fourth Proportional to 790,900.50, 1,091,436.87 and 428,315.94

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Solution

The fourth proportional to 790,900.50, 1,091,436.87 and 428,315.94 is: 591,072.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,900.50 : 1,091,436.87 = 428,315.94 : x
  2. Step 2: Convert to fraction form
    790,900.50/1,091,436.87 = 428,315.94/x
  3. Step 3: Cross multiply
    790,900.50x = 1,091,436.87 × 428,315.94
  4. Step 4: Simplify right side
    790,900.50x = 467,479,808,924.71
  5. Step 5: Solve for x
    x = 467,479,808,924.71/790,900.50
  6. Step 6: Final answer
    x = 591,072.85

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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.