Home / 825,429.40-1,238,144.10-405,525.40

Finding the Fourth Proportional to 825,429.40, 1,238,144.10 and 405,525.40

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Solution

The fourth proportional to 825,429.40, 1,238,144.10 and 405,525.40 is: 608,288.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,429.40 : 1,238,144.10 = 405,525.40 : x
  2. Step 2: Convert to fraction form
    825,429.40/1,238,144.10 = 405,525.40/x
  3. Step 3: Cross multiply
    825,429.40x = 1,238,144.10 × 405,525.40
  4. Step 4: Simplify right side
    825,429.40x = 502,098,881,410.14
  5. Step 5: Solve for x
    x = 502,098,881,410.14/825,429.40
  6. Step 6: Final answer
    x = 608,288.10

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Double scale
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Similar ratio
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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.