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Finding the Fourth Proportional to 503,972,343.45, 695,484,806.55 and 292,405,147.95

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Solution

The fourth proportional to 503,972,343.45, 695,484,806.55 and 292,405,147.95 is: 403,520,828.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,972,343.45 : 695,484,806.55 = 292,405,147.95 : x
  2. Step 2: Convert to fraction form
    503,972,343.45/695,484,806.55 = 292,405,147.95/x
  3. Step 3: Cross multiply
    503,972,343.45x = 695,484,806.55 × 292,405,147.95
  4. Step 4: Simplify right side
    503,972,343.45x = 203,363,337,756,229,856
  5. Step 5: Solve for x
    x = 203,363,337,756,229,856/503,972,343.45
  6. Step 6: Final answer
    x = 403,520,828.87

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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.