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Finding the Fourth Proportional to 404,427,981.60, 606,641,972.40 and 404,427,981.60

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Solution

The fourth proportional to 404,427,981.60, 606,641,972.40 and 404,427,981.60 is: 606,641,972.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,427,981.60 : 606,641,972.40 = 404,427,981.60 : x
  2. Step 2: Convert to fraction form
    404,427,981.60/606,641,972.40 = 404,427,981.60/x
  3. Step 3: Cross multiply
    404,427,981.60x = 606,641,972.40 × 404,427,981.60
  4. Step 4: Simplify right side
    404,427,981.60x = 245,342,988,451,574,912
  5. Step 5: Solve for x
    x = 245,342,988,451,574,912/404,427,981.60
  6. Step 6: Final answer
    x = 606,641,972.40

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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.