Home / 354,326,647.60-531,489,971.40-318,613,812.40

Finding the Fourth Proportional to 354,326,647.60, 531,489,971.40 and 318,613,812.40

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Solution

The fourth proportional to 354,326,647.60, 531,489,971.40 and 318,613,812.40 is: 477,920,718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,326,647.60 : 531,489,971.40 = 318,613,812.40 : x
  2. Step 2: Convert to fraction form
    354,326,647.60/531,489,971.40 = 318,613,812.40/x
  3. Step 3: Cross multiply
    354,326,647.60x = 531,489,971.40 × 318,613,812.40
  4. Step 4: Simplify right side
    354,326,647.60x = 169,340,046,040,120,960
  5. Step 5: Solve for x
    x = 169,340,046,040,120,960/354,326,647.60
  6. Step 6: Final answer
    x = 477,920,718.60

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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.