Home / 456,490.20-685,296.90-288,010.20

Finding the Fourth Proportional to 456,490.20, 685,296.90 and 288,010.20

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Solution

The fourth proportional to 456,490.20, 685,296.90 and 288,010.20 is: 432,369.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,490.20 : 685,296.90 = 288,010.20 : x
  2. Step 2: Convert to fraction form
    456,490.20/685,296.90 = 288,010.20/x
  3. Step 3: Cross multiply
    456,490.20x = 685,296.90 × 288,010.20
  4. Step 4: Simplify right side
    456,490.20x = 197,372,497,228.38
  5. Step 5: Solve for x
    x = 197,372,497,228.38/456,490.20
  6. Step 6: Final answer
    x = 432,369.63

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1.5x scale

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.