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Finding the Fourth Proportional to 455,998.80, 629,191.72 and 286,156.38

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Solution

The fourth proportional to 455,998.80, 629,191.72 and 286,156.38 is: 394,841.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,998.80 : 629,191.72 = 286,156.38 : x
  2. Step 2: Convert to fraction form
    455,998.80/629,191.72 = 286,156.38/x
  3. Step 3: Cross multiply
    455,998.80x = 629,191.72 × 286,156.38
  4. Step 4: Simplify right side
    455,998.80x = 180,047,224,921.17
  5. Step 5: Solve for x
    x = 180,047,224,921.17/455,998.80
  6. Step 6: Final answer
    x = 394,841.44

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1.5x scale

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.