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Finding the Fourth Proportional to 20,404,880.40, 30,607,320.60 and 20,404,880.40

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Solution

The fourth proportional to 20,404,880.40, 30,607,320.60 and 20,404,880.40 is: 30,607,320.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404,880.40 : 30,607,320.60 = 20,404,880.40 : x
  2. Step 2: Convert to fraction form
    20,404,880.40/30,607,320.60 = 20,404,880.40/x
  3. Step 3: Cross multiply
    20,404,880.40x = 30,607,320.60 × 20,404,880.40
  4. Step 4: Simplify right side
    20,404,880.40x = 624,538,716,207,456.25
  5. Step 5: Solve for x
    x = 624,538,716,207,456.25/20,404,880.40
  6. Step 6: Final answer
    x = 30,607,320.60

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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.