Home / 756,039.40-1,134,059.10-456,857.80

Finding the Fourth Proportional to 756,039.40, 1,134,059.10 and 456,857.80

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Solution

The fourth proportional to 756,039.40, 1,134,059.10 and 456,857.80 is: 685,286.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,039.40 : 1,134,059.10 = 456,857.80 : x
  2. Step 2: Convert to fraction form
    756,039.40/1,134,059.10 = 456,857.80/x
  3. Step 3: Cross multiply
    756,039.40x = 1,134,059.10 × 456,857.80
  4. Step 4: Simplify right side
    756,039.40x = 518,103,745,495.98
  5. Step 5: Solve for x
    x = 518,103,745,495.98/756,039.40
  6. Step 6: Final answer
    x = 685,286.70

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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.