Home / 817,410.30-1,226,115.45-256,443.90

Finding the Fourth Proportional to 817,410.30, 1,226,115.45 and 256,443.90

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Solution

The fourth proportional to 817,410.30, 1,226,115.45 and 256,443.90 is: 384,665.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,410.30 : 1,226,115.45 = 256,443.90 : x
  2. Step 2: Convert to fraction form
    817,410.30/1,226,115.45 = 256,443.90/x
  3. Step 3: Cross multiply
    817,410.30x = 1,226,115.45 × 256,443.90
  4. Step 4: Simplify right side
    817,410.30x = 314,429,827,848.26
  5. Step 5: Solve for x
    x = 314,429,827,848.26/817,410.30
  6. Step 6: Final answer
    x = 384,665.85

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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.