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Finding the Fourth Proportional to 664,326.90, 996,490.35 and 310,032.90

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Solution

The fourth proportional to 664,326.90, 996,490.35 and 310,032.90 is: 465,049.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,326.90 : 996,490.35 = 310,032.90 : x
  2. Step 2: Convert to fraction form
    664,326.90/996,490.35 = 310,032.90/x
  3. Step 3: Cross multiply
    664,326.90x = 996,490.35 × 310,032.90
  4. Step 4: Simplify right side
    664,326.90x = 308,944,793,032.52
  5. Step 5: Solve for x
    x = 308,944,793,032.52/664,326.90
  6. Step 6: Final answer
    x = 465,049.35

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Double scale
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Similar ratio
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1.5x scale

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.