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Finding the Fourth Proportional to 668,001.82, 921,941 and 423,008.94

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Solution

The fourth proportional to 668,001.82, 921,941 and 423,008.94 is: 583,814.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,001.82 : 921,941 = 423,008.94 : x
  2. Step 2: Convert to fraction form
    668,001.82/921,941 = 423,008.94/x
  3. Step 3: Cross multiply
    668,001.82x = 921,941 × 423,008.94
  4. Step 4: Simplify right side
    668,001.82x = 389,989,285,152.54
  5. Step 5: Solve for x
    x = 389,989,285,152.54/668,001.82
  6. Step 6: Final answer
    x = 583,814.70

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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.