Home / 669,287,639.43-923,639,344.74-371,942,414.19

Finding the Fourth Proportional to 669,287,639.43, 923,639,344.74 and 371,942,414.19

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Solution

The fourth proportional to 669,287,639.43, 923,639,344.74 and 371,942,414.19 is: 513,292,981.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,287,639.43 : 923,639,344.74 = 371,942,414.19 : x
  2. Step 2: Convert to fraction form
    669,287,639.43/923,639,344.74 = 371,942,414.19/x
  3. Step 3: Cross multiply
    669,287,639.43x = 923,639,344.74 × 371,942,414.19
  4. Step 4: Simplify right side
    669,287,639.43x = 343,540,647,723,465,280
  5. Step 5: Solve for x
    x = 343,540,647,723,465,280/669,287,639.43
  6. Step 6: Final answer
    x = 513,292,981.20

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Double scale
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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.