Home / 420,018.80-630,042.03-116,412.39

Finding the Fourth Proportional to 420,018.80, 630,042.03 and 116,412.39

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Solution

The fourth proportional to 420,018.80, 630,042.03 and 116,412.39 is: 174,622.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,018.80 : 630,042.03 = 116,412.39 : x
  2. Step 2: Convert to fraction form
    420,018.80/630,042.03 = 116,412.39/x
  3. Step 3: Cross multiply
    420,018.80x = 630,042.03 × 116,412.39
  4. Step 4: Simplify right side
    420,018.80x = 73,344,698,512.75
  5. Step 5: Solve for x
    x = 73,344,698,512.75/420,018.80
  6. Step 6: Final answer
    x = 174,622.42

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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.