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Finding the Fourth Proportional to 626,988.38, 865,602.63 and 412,751.23

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Solution

The fourth proportional to 626,988.38, 865,602.63 and 412,751.23 is: 569,832.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,988.38 : 865,602.63 = 412,751.23 : x
  2. Step 2: Convert to fraction form
    626,988.38/865,602.63 = 412,751.23/x
  3. Step 3: Cross multiply
    626,988.38x = 865,602.63 × 412,751.23
  4. Step 4: Simplify right side
    626,988.38x = 357,278,551,230.55
  5. Step 5: Solve for x
    x = 357,278,551,230.55/626,988.38
  6. Step 6: Final answer
    x = 569,832.81

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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.