Home / 939,397,991.40-1,409,096,987.10-325,778,279.40

Finding the Fourth Proportional to 939,397,991.40, 1,409,096,987.10 and 325,778,279.40

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Solution

The fourth proportional to 939,397,991.40, 1,409,096,987.10 and 325,778,279.40 is: 488,667,419.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,397,991.40 : 1,409,096,987.10 = 325,778,279.40 : x
  2. Step 2: Convert to fraction form
    939,397,991.40/1,409,096,987.10 = 325,778,279.40/x
  3. Step 3: Cross multiply
    939,397,991.40x = 1,409,096,987.10 × 325,778,279.40
  4. Step 4: Simplify right side
    939,397,991.40x = 459,053,191,965,161,920
  5. Step 5: Solve for x
    x = 459,053,191,965,161,920/939,397,991.40
  6. Step 6: Final answer
    x = 488,667,419.10

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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.