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Finding the Fourth Proportional to 20,318,688,069.60, 30,478,032,104.40 and 20,318,688,069.60

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Solution

The fourth proportional to 20,318,688,069.60, 30,478,032,104.40 and 20,318,688,069.60 is: 30,478,032,104.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,318,688,069.60 : 30,478,032,104.40 = 20,318,688,069.60 : x
  2. Step 2: Convert to fraction form
    20,318,688,069.60/30,478,032,104.40 = 20,318,688,069.60/x
  3. Step 3: Cross multiply
    20,318,688,069.60x = 30,478,032,104.40 × 20,318,688,069.60
  4. Step 4: Simplify right side
    20,318,688,069.60x = 619,273,627,304,558,067,712
  5. Step 5: Solve for x
    x = 619,273,627,304,558,067,712/20,318,688,069.60
  6. Step 6: Final answer
    x = 30,478,032,104.40

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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.