Home / 426,412.74-639,619.02-126,897.60

Finding the Fourth Proportional to 426,412.74, 639,619.02 and 126,897.60

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Solution

The fourth proportional to 426,412.74, 639,619.02 and 126,897.60 is: 190,346.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,412.74 : 639,619.02 = 126,897.60 : x
  2. Step 2: Convert to fraction form
    426,412.74/639,619.02 = 126,897.60/x
  3. Step 3: Cross multiply
    426,412.74x = 639,619.02 × 126,897.60
  4. Step 4: Simplify right side
    426,412.74x = 81,166,118,552.35
  5. Step 5: Solve for x
    x = 81,166,118,552.35/426,412.74
  6. Step 6: Final answer
    x = 190,346.37

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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.