Home / 426,349.68-639,413.14-126,749.58

Finding the Fourth Proportional to 426,349.68, 639,413.14 and 126,749.58

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Solution

The fourth proportional to 426,349.68, 639,413.14 and 126,749.58 is: 190,091.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,349.68 : 639,413.14 = 126,749.58 : x
  2. Step 2: Convert to fraction form
    426,349.68/639,413.14 = 126,749.58/x
  3. Step 3: Cross multiply
    426,349.68x = 639,413.14 × 126,749.58
  4. Step 4: Simplify right side
    426,349.68x = 81,045,346,941.48
  5. Step 5: Solve for x
    x = 81,045,346,941.48/426,349.68
  6. Step 6: Final answer
    x = 190,091.26

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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.