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Finding the Fourth Proportional to 518,645.23, 715,444.25 and 325,336.30

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Solution

The fourth proportional to 518,645.23, 715,444.25 and 325,336.30 is: 448,784.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,645.23 : 715,444.25 = 325,336.30 : x
  2. Step 2: Convert to fraction form
    518,645.23/715,444.25 = 325,336.30/x
  3. Step 3: Cross multiply
    518,645.23x = 715,444.25 × 325,336.30
  4. Step 4: Simplify right side
    518,645.23x = 232,759,981,735.98
  5. Step 5: Solve for x
    x = 232,759,981,735.98/518,645.23
  6. Step 6: Final answer
    x = 448,784.58

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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.