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Finding the Fourth Proportional to 455,888.60, 683,221.65 and 354,808.71

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Solution

The fourth proportional to 455,888.60, 683,221.65 and 354,808.71 is: 531,737.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,888.60 : 683,221.65 = 354,808.71 : x
  2. Step 2: Convert to fraction form
    455,888.60/683,221.65 = 354,808.71/x
  3. Step 3: Cross multiply
    455,888.60x = 683,221.65 × 354,808.71
  4. Step 4: Simplify right side
    455,888.60x = 242,412,992,280.57
  5. Step 5: Solve for x
    x = 242,412,992,280.57/455,888.60
  6. Step 6: Final answer
    x = 531,737.34

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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.