Home / 656,963.20-985,444.80-213,731.20

Finding the Fourth Proportional to 656,963.20, 985,444.80 and 213,731.20

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Solution

The fourth proportional to 656,963.20, 985,444.80 and 213,731.20 is: 320,596.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,963.20 : 985,444.80 = 213,731.20 : x
  2. Step 2: Convert to fraction form
    656,963.20/985,444.80 = 213,731.20/x
  3. Step 3: Cross multiply
    656,963.20x = 985,444.80 × 213,731.20
  4. Step 4: Simplify right side
    656,963.20x = 210,620,299,637.76
  5. Step 5: Solve for x
    x = 210,620,299,637.76/656,963.20
  6. Step 6: Final answer
    x = 320,596.80

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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.