Home / 431,177,405.60-646,860,586.80-139,994,976.80

Finding the Fourth Proportional to 431,177,405.60, 646,860,586.80 and 139,994,976.80

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Solution

The fourth proportional to 431,177,405.60, 646,860,586.80 and 139,994,976.80 is: 210,023,140.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,177,405.60 : 646,860,586.80 = 139,994,976.80 : x
  2. Step 2: Convert to fraction form
    431,177,405.60/646,860,586.80 = 139,994,976.80/x
  3. Step 3: Cross multiply
    431,177,405.60x = 646,860,586.80 × 139,994,976.80
  4. Step 4: Simplify right side
    431,177,405.60x = 90,557,232,841,900,384
  5. Step 5: Solve for x
    x = 90,557,232,841,900,384/431,177,405.60
  6. Step 6: Final answer
    x = 210,023,140.51

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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.