Home / 641,118.72-961,980.48-286,101.12

Finding the Fourth Proportional to 641,118.72, 961,980.48 and 286,101.12

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Solution

The fourth proportional to 641,118.72, 961,980.48 and 286,101.12 is: 429,286.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,118.72 : 961,980.48 = 286,101.12 : x
  2. Step 2: Convert to fraction form
    641,118.72/961,980.48 = 286,101.12/x
  3. Step 3: Cross multiply
    641,118.72x = 961,980.48 × 286,101.12
  4. Step 4: Simplify right side
    641,118.72x = 275,223,692,746.14
  5. Step 5: Solve for x
    x = 275,223,692,746.14/641,118.72
  6. Step 6: Final answer
    x = 429,286.63

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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.