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Finding the Fourth Proportional to 404,473.20, 606,709.80 and 384,790.20

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Solution

The fourth proportional to 404,473.20, 606,709.80 and 384,790.20 is: 577,185.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,473.20 : 606,709.80 = 384,790.20 : x
  2. Step 2: Convert to fraction form
    404,473.20/606,709.80 = 384,790.20/x
  3. Step 3: Cross multiply
    404,473.20x = 606,709.80 × 384,790.20
  4. Step 4: Simplify right side
    404,473.20x = 233,455,985,283.96
  5. Step 5: Solve for x
    x = 233,455,985,283.96/404,473.20
  6. Step 6: Final answer
    x = 577,185.30

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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.