Home / 784,927.60-1,176,815.40-311,378.80

Finding the Fourth Proportional to 784,927.60, 1,176,815.40 and 311,378.80

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Solution

The fourth proportional to 784,927.60, 1,176,815.40 and 311,378.80 is: 466,839.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,927.60 : 1,176,815.40 = 311,378.80 : x
  2. Step 2: Convert to fraction form
    784,927.60/1,176,815.40 = 311,378.80/x
  3. Step 3: Cross multiply
    784,927.60x = 1,176,815.40 × 311,378.80
  4. Step 4: Simplify right side
    784,927.60x = 366,435,367,073.52
  5. Step 5: Solve for x
    x = 366,435,367,073.52/784,927.60
  6. Step 6: Final answer
    x = 466,839.70

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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.