Home / 431,569,314.35-647,353,971.53-247,147,477.55

Finding the Fourth Proportional to 431,569,314.35, 647,353,971.53 and 247,147,477.55

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Solution

The fourth proportional to 431,569,314.35, 647,353,971.53 and 247,147,477.55 is: 370,721,216.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,569,314.35 : 647,353,971.53 = 247,147,477.55 : x
  2. Step 2: Convert to fraction form
    431,569,314.35/647,353,971.53 = 247,147,477.55/x
  3. Step 3: Cross multiply
    431,569,314.35x = 647,353,971.53 × 247,147,477.55
  4. Step 4: Simplify right side
    431,569,314.35x = 159,991,901,144,378,272
  5. Step 5: Solve for x
    x = 159,991,901,144,378,272/431,569,314.35
  6. Step 6: Final answer
    x = 370,721,216.33

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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.