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Finding the Fourth Proportional to 455,339.13, 683,365.57 and 317,666.91

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Solution

The fourth proportional to 455,339.13, 683,365.57 and 317,666.91 is: 476,749.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,339.13 : 683,365.57 = 317,666.91 : x
  2. Step 2: Convert to fraction form
    455,339.13/683,365.57 = 317,666.91/x
  3. Step 3: Cross multiply
    455,339.13x = 683,365.57 × 317,666.91
  4. Step 4: Simplify right side
    455,339.13x = 217,082,629,022.29
  5. Step 5: Solve for x
    x = 217,082,629,022.29/455,339.13
  6. Step 6: Final answer
    x = 476,749.34

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1.5x scale

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.