Home / 756,209.70-1,134,314.55-307,145.70

Finding the Fourth Proportional to 756,209.70, 1,134,314.55 and 307,145.70

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Solution

The fourth proportional to 756,209.70, 1,134,314.55 and 307,145.70 is: 460,718.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,209.70 : 1,134,314.55 = 307,145.70 : x
  2. Step 2: Convert to fraction form
    756,209.70/1,134,314.55 = 307,145.70/x
  3. Step 3: Cross multiply
    756,209.70x = 1,134,314.55 × 307,145.70
  4. Step 4: Simplify right side
    756,209.70x = 348,399,836,479.94
  5. Step 5: Solve for x
    x = 348,399,836,479.94/756,209.70
  6. Step 6: Final answer
    x = 460,718.55

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Half scale
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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.