Home / 456,531.20-685,358.40-288,051.20

Finding the Fourth Proportional to 456,531.20, 685,358.40 and 288,051.20

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Solution

The fourth proportional to 456,531.20, 685,358.40 and 288,051.20 is: 432,431.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,531.20 : 685,358.40 = 288,051.20 : x
  2. Step 2: Convert to fraction form
    456,531.20/685,358.40 = 288,051.20/x
  3. Step 3: Cross multiply
    456,531.20x = 685,358.40 × 288,051.20
  4. Step 4: Simplify right side
    456,531.20x = 197,418,309,550.08
  5. Step 5: Solve for x
    x = 197,418,309,550.08/456,531.20
  6. Step 6: Final answer
    x = 432,431.15

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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.