Home / 939,935.40-1,409,903.10-308,869.80

Finding the Fourth Proportional to 939,935.40, 1,409,903.10 and 308,869.80

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Solution

The fourth proportional to 939,935.40, 1,409,903.10 and 308,869.80 is: 463,304.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,935.40 : 1,409,903.10 = 308,869.80 : x
  2. Step 2: Convert to fraction form
    939,935.40/1,409,903.10 = 308,869.80/x
  3. Step 3: Cross multiply
    939,935.40x = 1,409,903.10 × 308,869.80
  4. Step 4: Simplify right side
    939,935.40x = 435,476,488,516.38
  5. Step 5: Solve for x
    x = 435,476,488,516.38/939,935.40
  6. Step 6: Final answer
    x = 463,304.70

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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.