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Finding the Fourth Proportional to 503,688.18, 695,138.73 and 376,142.34

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Solution

The fourth proportional to 503,688.18, 695,138.73 and 376,142.34 is: 519,113.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,688.18 : 695,138.73 = 376,142.34 : x
  2. Step 2: Convert to fraction form
    503,688.18/695,138.73 = 376,142.34/x
  3. Step 3: Cross multiply
    503,688.18x = 695,138.73 × 376,142.34
  4. Step 4: Simplify right side
    503,688.18x = 261,471,108,526.83
  5. Step 5: Solve for x
    x = 261,471,108,526.83/503,688.18
  6. Step 6: Final answer
    x = 519,113.05

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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.