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Finding the Fourth Proportional to 318,924,010.60, 478,386,015.90 and 318,924,010.60

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Solution

The fourth proportional to 318,924,010.60, 478,386,015.90 and 318,924,010.60 is: 478,386,015.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,924,010.60 : 478,386,015.90 = 318,924,010.60 : x
  2. Step 2: Convert to fraction form
    318,924,010.60/478,386,015.90 = 318,924,010.60/x
  3. Step 3: Cross multiply
    318,924,010.60x = 478,386,015.90 × 318,924,010.60
  4. Step 4: Simplify right side
    318,924,010.60x = 152,568,786,805,783,360
  5. Step 5: Solve for x
    x = 152,568,786,805,783,360/318,924,010.60
  6. Step 6: Final answer
    x = 478,386,015.90

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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.