Home / 991,096,928.79-1,486,327,121.50-326,961,657.51

Finding the Fourth Proportional to 991,096,928.79, 1,486,327,121.50 and 326,961,657.51

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Solution

The fourth proportional to 991,096,928.79, 1,486,327,121.50 and 326,961,657.51 is: 490,337,488.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,096,928.79 : 1,486,327,121.50 = 326,961,657.51 : x
  2. Step 2: Convert to fraction form
    991,096,928.79/1,486,327,121.50 = 326,961,657.51/x
  3. Step 3: Cross multiply
    991,096,928.79x = 1,486,327,121.50 × 326,961,657.51
  4. Step 4: Simplify right side
    991,096,928.79x = 485,971,979,247,707,136
  5. Step 5: Solve for x
    x = 485,971,979,247,707,136/991,096,928.79
  6. Step 6: Final answer
    x = 490,337,488.83

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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.