Home / 827,285.40-1,240,928.10-266,319.90

Finding the Fourth Proportional to 827,285.40, 1,240,928.10 and 266,319.90

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Solution

The fourth proportional to 827,285.40, 1,240,928.10 and 266,319.90 is: 399,479.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,285.40 : 1,240,928.10 = 266,319.90 : x
  2. Step 2: Convert to fraction form
    827,285.40/1,240,928.10 = 266,319.90/x
  3. Step 3: Cross multiply
    827,285.40x = 1,240,928.10 × 266,319.90
  4. Step 4: Simplify right side
    827,285.40x = 330,483,847,499.19
  5. Step 5: Solve for x
    x = 330,483,847,499.19/827,285.40
  6. Step 6: Final answer
    x = 399,479.85

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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.