Home / 423,080.20-634,620.30-403,397.20

Finding the Fourth Proportional to 423,080.20, 634,620.30 and 403,397.20

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Solution

The fourth proportional to 423,080.20, 634,620.30 and 403,397.20 is: 605,095.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,080.20 : 634,620.30 = 403,397.20 : x
  2. Step 2: Convert to fraction form
    423,080.20/634,620.30 = 403,397.20/x
  3. Step 3: Cross multiply
    423,080.20x = 634,620.30 × 403,397.20
  4. Step 4: Simplify right side
    423,080.20x = 256,004,052,083.16
  5. Step 5: Solve for x
    x = 256,004,052,083.16/423,080.20
  6. Step 6: Final answer
    x = 605,095.80

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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.