Home / 1,232,131.20-1,848,520.80-390,681.60

Finding the Fourth Proportional to 1,232,131.20, 1,848,520.80 and 390,681.60

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Solution

The fourth proportional to 1,232,131.20, 1,848,520.80 and 390,681.60 is: 586,125.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,232,131.20 : 1,848,520.80 = 390,681.60 : x
  2. Step 2: Convert to fraction form
    1,232,131.20/1,848,520.80 = 390,681.60/x
  3. Step 3: Cross multiply
    1,232,131.20x = 1,848,520.80 × 390,681.60
  4. Step 4: Simplify right side
    1,232,131.20x = 722,183,063,777.28
  5. Step 5: Solve for x
    x = 722,183,063,777.28/1,232,131.20
  6. Step 6: Final answer
    x = 586,125.13

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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.