Home / 635,613.84-876,428.28-405,869.04

Finding the Fourth Proportional to 635,613.84, 876,428.28 and 405,869.04

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Solution

The fourth proportional to 635,613.84, 876,428.28 and 405,869.04 is: 559,640.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,613.84 : 876,428.28 = 405,869.04 : x
  2. Step 2: Convert to fraction form
    635,613.84/876,428.28 = 405,869.04/x
  3. Step 3: Cross multiply
    635,613.84x = 876,428.28 × 405,869.04
  4. Step 4: Simplify right side
    635,613.84x = 355,715,104,632.45
  5. Step 5: Solve for x
    x = 355,715,104,632.45/635,613.84
  6. Step 6: Final answer
    x = 559,640.28

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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.