Home / 807,489.30-1,211,406.17-402,899.06

Finding the Fourth Proportional to 807,489.30, 1,211,406.17 and 402,899.06

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Solution

The fourth proportional to 807,489.30, 1,211,406.17 and 402,899.06 is: 604,434.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,489.30 : 1,211,406.17 = 402,899.06 : x
  2. Step 2: Convert to fraction form
    807,489.30/1,211,406.17 = 402,899.06/x
  3. Step 3: Cross multiply
    807,489.30x = 1,211,406.17 × 402,899.06
  4. Step 4: Simplify right side
    807,489.30x = 488,074,407,171.20
  5. Step 5: Solve for x
    x = 488,074,407,171.20/807,489.30
  6. Step 6: Final answer
    x = 604,434.52

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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.