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Finding the Fourth Proportional to 668,130.28, 921,802.86 and 377,713.69

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Solution

The fourth proportional to 668,130.28, 921,802.86 and 377,713.69 is: 521,122.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,130.28 : 921,802.86 = 377,713.69 : x
  2. Step 2: Convert to fraction form
    668,130.28/921,802.86 = 377,713.69/x
  3. Step 3: Cross multiply
    668,130.28x = 921,802.86 × 377,713.69
  4. Step 4: Simplify right side
    668,130.28x = 348,177,557,398.65
  5. Step 5: Solve for x
    x = 348,177,557,398.65/668,130.28
  6. Step 6: Final answer
    x = 521,122.26

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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.