Home / 538,004.86-742,279.20-305,393.12

Finding the Fourth Proportional to 538,004.86, 742,279.20 and 305,393.12

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Solution

The fourth proportional to 538,004.86, 742,279.20 and 305,393.12 is: 421,347.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,004.86 : 742,279.20 = 305,393.12 : x
  2. Step 2: Convert to fraction form
    538,004.86/742,279.20 = 305,393.12/x
  3. Step 3: Cross multiply
    538,004.86x = 742,279.20 × 305,393.12
  4. Step 4: Simplify right side
    538,004.86x = 226,686,960,799.10
  5. Step 5: Solve for x
    x = 226,686,960,799.10/538,004.86
  6. Step 6: Final answer
    x = 421,347.42

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1.5x scale

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.