Home / 939,917.40-1,409,876.10-308,851.80

Finding the Fourth Proportional to 939,917.40, 1,409,876.10 and 308,851.80

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Solution

The fourth proportional to 939,917.40, 1,409,876.10 and 308,851.80 is: 463,277.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,917.40 : 1,409,876.10 = 308,851.80 : x
  2. Step 2: Convert to fraction form
    939,917.40/1,409,876.10 = 308,851.80/x
  3. Step 3: Cross multiply
    939,917.40x = 1,409,876.10 × 308,851.80
  4. Step 4: Simplify right side
    939,917.40x = 435,442,771,261.98
  5. Step 5: Solve for x
    x = 435,442,771,261.98/939,917.40
  6. Step 6: Final answer
    x = 463,277.70

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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.