Home / 620,465,019.68-856,215,962.38-338,201,253.56

Finding the Fourth Proportional to 620,465,019.68, 856,215,962.38 and 338,201,253.56

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Solution

The fourth proportional to 620,465,019.68, 856,215,962.38 and 338,201,253.56 is: 466,703,686.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,465,019.68 : 856,215,962.38 = 338,201,253.56 : x
  2. Step 2: Convert to fraction form
    620,465,019.68/856,215,962.38 = 338,201,253.56/x
  3. Step 3: Cross multiply
    620,465,019.68x = 856,215,962.38 × 338,201,253.56
  4. Step 4: Simplify right side
    620,465,019.68x = 289,573,311,794,997,824
  5. Step 5: Solve for x
    x = 289,573,311,794,997,824/620,465,019.68
  6. Step 6: Final answer
    x = 466,703,686.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.