Home / 445,285.80-667,928.70-312,316.20

Finding the Fourth Proportional to 445,285.80, 667,928.70 and 312,316.20

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Solution

The fourth proportional to 445,285.80, 667,928.70 and 312,316.20 is: 468,474.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,285.80 : 667,928.70 = 312,316.20 : x
  2. Step 2: Convert to fraction form
    445,285.80/667,928.70 = 312,316.20/x
  3. Step 3: Cross multiply
    445,285.80x = 667,928.70 × 312,316.20
  4. Step 4: Simplify right side
    445,285.80x = 208,604,953,454.94
  5. Step 5: Solve for x
    x = 208,604,953,454.94/445,285.80
  6. Step 6: Final answer
    x = 468,474.30

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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.