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Finding the Fourth Proportional to 354,390,630.40, 531,585,945.60 and 354,390,630.40

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Solution

The fourth proportional to 354,390,630.40, 531,585,945.60 and 354,390,630.40 is: 531,585,945.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,390,630.40 : 531,585,945.60 = 354,390,630.40 : x
  2. Step 2: Convert to fraction form
    354,390,630.40/531,585,945.60 = 354,390,630.40/x
  3. Step 3: Cross multiply
    354,390,630.40x = 531,585,945.60 × 354,390,630.40
  4. Step 4: Simplify right side
    354,390,630.40x = 188,389,078,372,964,096
  5. Step 5: Solve for x
    x = 188,389,078,372,964,096/354,390,630.40
  6. Step 6: Final answer
    x = 531,585,945.60

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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.