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Finding the Fourth Proportional to 455,494.90, 683,242.35 and 366,921.40

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Solution

The fourth proportional to 455,494.90, 683,242.35 and 366,921.40 is: 550,382.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,494.90 : 683,242.35 = 366,921.40 : x
  2. Step 2: Convert to fraction form
    455,494.90/683,242.35 = 366,921.40/x
  3. Step 3: Cross multiply
    455,494.90x = 683,242.35 × 366,921.40
  4. Step 4: Simplify right side
    455,494.90x = 250,696,239,601.29
  5. Step 5: Solve for x
    x = 250,696,239,601.29/455,494.90
  6. Step 6: Final answer
    x = 550,382.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.