Home / 810,403,063.08-1,215,725,665.20-257,723,521.80

Finding the Fourth Proportional to 810,403,063.08, 1,215,725,665.20 and 257,723,521.80

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Solution

The fourth proportional to 810,403,063.08, 1,215,725,665.20 and 257,723,521.80 is: 386,623,785.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,403,063.08 : 1,215,725,665.20 = 257,723,521.80 : x
  2. Step 2: Convert to fraction form
    810,403,063.08/1,215,725,665.20 = 257,723,521.80/x
  3. Step 3: Cross multiply
    810,403,063.08x = 1,215,725,665.20 × 257,723,521.80
  4. Step 4: Simplify right side
    810,403,063.08x = 313,321,099,977,991,744
  5. Step 5: Solve for x
    x = 313,321,099,977,991,744/810,403,063.08
  6. Step 6: Final answer
    x = 386,623,785.44

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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.