Home / 497,212.08-686,412.24-388,081.92

Finding the Fourth Proportional to 497,212.08, 686,412.24 and 388,081.92

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Solution

The fourth proportional to 497,212.08, 686,412.24 and 388,081.92 is: 535,755.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,212.08 : 686,412.24 = 388,081.92 : x
  2. Step 2: Convert to fraction form
    497,212.08/686,412.24 = 388,081.92/x
  3. Step 3: Cross multiply
    497,212.08x = 686,412.24 × 388,081.92
  4. Step 4: Simplify right side
    497,212.08x = 266,384,180,010.70
  5. Step 5: Solve for x
    x = 266,384,180,010.70/497,212.08
  6. Step 6: Final answer
    x = 535,755.65

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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.