Home / 431,158,087.80-646,831,610.10-212,912,983.80

Finding the Fourth Proportional to 431,158,087.80, 646,831,610.10 and 212,912,983.80

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Solution

The fourth proportional to 431,158,087.80, 646,831,610.10 and 212,912,983.80 is: 319,416,130.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,158,087.80 : 646,831,610.10 = 212,912,983.80 : x
  2. Step 2: Convert to fraction form
    431,158,087.80/646,831,610.10 = 212,912,983.80/x
  3. Step 3: Cross multiply
    431,158,087.80x = 646,831,610.10 × 212,912,983.80
  4. Step 4: Simplify right side
    431,158,087.80x = 137,718,848,122,549,232
  5. Step 5: Solve for x
    x = 137,718,848,122,549,232/431,158,087.80
  6. Step 6: Final answer
    x = 319,416,130.69

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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.