Home / 538,619.22-742,287.60-402,412.86

Finding the Fourth Proportional to 538,619.22, 742,287.60 and 402,412.86

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Solution

The fourth proportional to 538,619.22, 742,287.60 and 402,412.86 is: 554,577.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,619.22 : 742,287.60 = 402,412.86 : x
  2. Step 2: Convert to fraction form
    538,619.22/742,287.60 = 402,412.86/x
  3. Step 3: Cross multiply
    538,619.22x = 742,287.60 × 402,412.86
  4. Step 4: Simplify right side
    538,619.22x = 298,706,076,058.54
  5. Step 5: Solve for x
    x = 298,706,076,058.54/538,619.22
  6. Step 6: Final answer
    x = 554,577.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.