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Finding the Fourth Proportional to 668,017.13, 921,863.63 and 366,211.13

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Solution

The fourth proportional to 668,017.13, 921,863.63 and 366,211.13 is: 505,371.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,017.13 : 921,863.63 = 366,211.13 : x
  2. Step 2: Convert to fraction form
    668,017.13/921,863.63 = 366,211.13/x
  3. Step 3: Cross multiply
    668,017.13x = 921,863.63 × 366,211.13
  4. Step 4: Simplify right side
    668,017.13x = 337,596,717,954.41
  5. Step 5: Solve for x
    x = 337,596,717,954.41/668,017.13
  6. Step 6: Final answer
    x = 505,371.35

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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.