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Finding the Fourth Proportional to 625,721,954.01, 863,103,523.33 and 371,223,129.69

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Solution

The fourth proportional to 625,721,954.01, 863,103,523.33 and 371,223,129.69 is: 512,054,897.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,721,954.01 : 863,103,523.33 = 371,223,129.69 : x
  2. Step 2: Convert to fraction form
    625,721,954.01/863,103,523.33 = 371,223,129.69/x
  3. Step 3: Cross multiply
    625,721,954.01x = 863,103,523.33 × 371,223,129.69
  4. Step 4: Simplify right side
    625,721,954.01x = 320,403,991,174,822,784
  5. Step 5: Solve for x
    x = 320,403,991,174,822,784/625,721,954.01
  6. Step 6: Final answer
    x = 512,054,897.74

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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.