Home / 478,988-718,604.04-142,040.96

Finding the Fourth Proportional to 478,988, 718,604.04 and 142,040.96

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Solution

The fourth proportional to 478,988, 718,604.04 and 142,040.96 is: 213,097.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,988 : 718,604.04 = 142,040.96 : x
  2. Step 2: Convert to fraction form
    478,988/718,604.04 = 142,040.96/x
  3. Step 3: Cross multiply
    478,988x = 718,604.04 × 142,040.96
  4. Step 4: Simplify right side
    478,988x = 102,071,207,701.48
  5. Step 5: Solve for x
    x = 102,071,207,701.48/478,988
  6. Step 6: Final answer
    x = 213,097.63

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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.