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Finding the Fourth Proportional to 668,617.36, 922,706.40 and 366,811.36

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Solution

The fourth proportional to 668,617.36, 922,706.40 and 366,811.36 is: 506,207.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,617.36 : 922,706.40 = 366,811.36 : x
  2. Step 2: Convert to fraction form
    668,617.36/922,706.40 = 366,811.36/x
  3. Step 3: Cross multiply
    668,617.36x = 922,706.40 × 366,811.36
  4. Step 4: Simplify right side
    668,617.36x = 338,459,189,464.70
  5. Step 5: Solve for x
    x = 338,459,189,464.70/668,617.36
  6. Step 6: Final answer
    x = 506,207.60

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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.