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Finding the Fourth Proportional to 620,614.52, 856,448.84 and 352,342.52

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Solution

The fourth proportional to 620,614.52, 856,448.84 and 352,342.52 is: 486,233.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,614.52 : 856,448.84 = 352,342.52 : x
  2. Step 2: Convert to fraction form
    620,614.52/856,448.84 = 352,342.52/x
  3. Step 3: Cross multiply
    620,614.52x = 856,448.84 × 352,342.52
  4. Step 4: Simplify right side
    620,614.52x = 301,763,342,536.68
  5. Step 5: Solve for x
    x = 301,763,342,536.68/620,614.52
  6. Step 6: Final answer
    x = 486,233.13

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1.5x scale

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.