Home / 788,563.80-1,182,845.70-256,138.65

Finding the Fourth Proportional to 788,563.80, 1,182,845.70 and 256,138.65

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Solution

The fourth proportional to 788,563.80, 1,182,845.70 and 256,138.65 is: 384,207.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,563.80 : 1,182,845.70 = 256,138.65 : x
  2. Step 2: Convert to fraction form
    788,563.80/1,182,845.70 = 256,138.65/x
  3. Step 3: Cross multiply
    788,563.80x = 1,182,845.70 × 256,138.65
  4. Step 4: Simplify right side
    788,563.80x = 302,972,500,756.31
  5. Step 5: Solve for x
    x = 302,972,500,756.31/788,563.80
  6. Step 6: Final answer
    x = 384,207.98

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Double scale
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Similar ratio
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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.