Home / 785,356.20-1,177,688.70-311,884.20

Finding the Fourth Proportional to 785,356.20, 1,177,688.70 and 311,884.20

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Solution

The fourth proportional to 785,356.20, 1,177,688.70 and 311,884.20 is: 467,689.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,356.20 : 1,177,688.70 = 311,884.20 : x
  2. Step 2: Convert to fraction form
    785,356.20/1,177,688.70 = 311,884.20/x
  3. Step 3: Cross multiply
    785,356.20x = 1,177,688.70 × 311,884.20
  4. Step 4: Simplify right side
    785,356.20x = 367,302,498,048.54
  5. Step 5: Solve for x
    x = 367,302,498,048.54/785,356.20
  6. Step 6: Final answer
    x = 467,689.05

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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.