Home / 431,177,439.60-646,860,637.80-139,995,010.80

Finding the Fourth Proportional to 431,177,439.60, 646,860,637.80 and 139,995,010.80

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Solution

The fourth proportional to 431,177,439.60, 646,860,637.80 and 139,995,010.80 is: 210,023,191.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,177,439.60 : 646,860,637.80 = 139,995,010.80 : x
  2. Step 2: Convert to fraction form
    431,177,439.60/646,860,637.80 = 139,995,010.80/x
  3. Step 3: Cross multiply
    431,177,439.60x = 646,860,637.80 × 139,995,010.80
  4. Step 4: Simplify right side
    431,177,439.60x = 90,557,261,974,905,888
  5. Step 5: Solve for x
    x = 90,557,261,974,905,888/431,177,439.60
  6. Step 6: Final answer
    x = 210,023,191.52

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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.