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Finding the Fourth Proportional to 641,492, 884,239.08 and 505,310.32

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Solution

The fourth proportional to 641,492, 884,239.08 and 505,310.32 is: 696,524.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,492 : 884,239.08 = 505,310.32 : x
  2. Step 2: Convert to fraction form
    641,492/884,239.08 = 505,310.32/x
  3. Step 3: Cross multiply
    641,492x = 884,239.08 × 505,310.32
  4. Step 4: Simplify right side
    641,492x = 446,815,132,471.31
  5. Step 5: Solve for x
    x = 446,815,132,471.31/641,492
  6. Step 6: Final answer
    x = 696,524.87

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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.