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Finding the Fourth Proportional to 668,502.12, 922,444.02 and 378,153.30

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Solution

The fourth proportional to 668,502.12, 922,444.02 and 378,153.30 is: 521,801.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,502.12 : 922,444.02 = 378,153.30 : x
  2. Step 2: Convert to fraction form
    668,502.12/922,444.02 = 378,153.30/x
  3. Step 3: Cross multiply
    668,502.12x = 922,444.02 × 378,153.30
  4. Step 4: Simplify right side
    668,502.12x = 348,825,250,228.27
  5. Step 5: Solve for x
    x = 348,825,250,228.27/668,502.12
  6. Step 6: Final answer
    x = 521,801.26

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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.