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Finding the Fourth Proportional to 661,067.12, 912,237.72 and 374,590.64

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Solution

The fourth proportional to 661,067.12, 912,237.72 and 374,590.64 is: 516,915.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,067.12 : 912,237.72 = 374,590.64 : x
  2. Step 2: Convert to fraction form
    661,067.12/912,237.72 = 374,590.64/x
  3. Step 3: Cross multiply
    661,067.12x = 912,237.72 × 374,590.64
  4. Step 4: Simplify right side
    661,067.12x = 341,715,711,366.94
  5. Step 5: Solve for x
    x = 341,715,711,366.94/661,067.12
  6. Step 6: Final answer
    x = 516,915.30

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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.