Home / 945,649.20-1,418,668.20-315,015.60

Finding the Fourth Proportional to 945,649.20, 1,418,668.20 and 315,015.60

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Solution

The fourth proportional to 945,649.20, 1,418,668.20 and 315,015.60 is: 472,588.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,649.20 : 1,418,668.20 = 315,015.60 : x
  2. Step 2: Convert to fraction form
    945,649.20/1,418,668.20 = 315,015.60/x
  3. Step 3: Cross multiply
    945,649.20x = 1,418,668.20 × 315,015.60
  4. Step 4: Simplify right side
    945,649.20x = 446,902,614,223.92
  5. Step 5: Solve for x
    x = 446,902,614,223.92/945,649.20
  6. Step 6: Final answer
    x = 472,588.16

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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.