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Finding the Fourth Proportional to 455,439.40, 683,159.10 and 366,865.90

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Solution

The fourth proportional to 455,439.40, 683,159.10 and 366,865.90 is: 550,298.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,439.40 : 683,159.10 = 366,865.90 : x
  2. Step 2: Convert to fraction form
    455,439.40/683,159.10 = 366,865.90/x
  3. Step 3: Cross multiply
    455,439.40x = 683,159.10 × 366,865.90
  4. Step 4: Simplify right side
    455,439.40x = 250,627,778,064.69
  5. Step 5: Solve for x
    x = 250,627,778,064.69/455,439.40
  6. Step 6: Final answer
    x = 550,298.85

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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.