Home / 403,821.20-605,731.80-401,056.40

Finding the Fourth Proportional to 403,821.20, 605,731.80 and 401,056.40

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Solution

The fourth proportional to 403,821.20, 605,731.80 and 401,056.40 is: 601,584.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,821.20 : 605,731.80 = 401,056.40 : x
  2. Step 2: Convert to fraction form
    403,821.20/605,731.80 = 401,056.40/x
  3. Step 3: Cross multiply
    403,821.20x = 605,731.80 × 401,056.40
  4. Step 4: Simplify right side
    403,821.20x = 242,932,615,073.52
  5. Step 5: Solve for x
    x = 242,932,615,073.52/403,821.20
  6. Step 6: Final answer
    x = 601,584.60

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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.