Home / 772,489,145.70-1,158,733,718.55-687,836,499.30

Finding the Fourth Proportional to 772,489,145.70, 1,158,733,718.55 and 687,836,499.30

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Solution

The fourth proportional to 772,489,145.70, 1,158,733,718.55 and 687,836,499.30 is: 1,031,754,748.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,489,145.70 : 1,158,733,718.55 = 687,836,499.30 : x
  2. Step 2: Convert to fraction form
    772,489,145.70/1,158,733,718.55 = 687,836,499.30/x
  3. Step 3: Cross multiply
    772,489,145.70x = 1,158,733,718.55 × 687,836,499.30
  4. Step 4: Simplify right side
    772,489,145.70x = 797,019,344,588,303,360
  5. Step 5: Solve for x
    x = 797,019,344,588,303,360/772,489,145.70
  6. Step 6: Final answer
    x = 1,031,754,748.95

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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.