Home / 768,086.36-1,151,636.20-319,117.40

Finding the Fourth Proportional to 768,086.36, 1,151,636.20 and 319,117.40

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Solution

The fourth proportional to 768,086.36, 1,151,636.20 and 319,117.40 is: 478,471.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,086.36 : 1,151,636.20 = 319,117.40 : x
  2. Step 2: Convert to fraction form
    768,086.36/1,151,636.20 = 319,117.40/x
  3. Step 3: Cross multiply
    768,086.36x = 1,151,636.20 × 319,117.40
  4. Step 4: Simplify right side
    768,086.36x = 367,507,149,889.88
  5. Step 5: Solve for x
    x = 367,507,149,889.88/768,086.36
  6. Step 6: Final answer
    x = 478,471.13

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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.