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Finding the Fourth Proportional to 455,412.30, 683,118.45 and 322,442.70

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Solution

The fourth proportional to 455,412.30, 683,118.45 and 322,442.70 is: 483,664.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,412.30 : 683,118.45 = 322,442.70 : x
  2. Step 2: Convert to fraction form
    455,412.30/683,118.45 = 322,442.70/x
  3. Step 3: Cross multiply
    455,412.30x = 683,118.45 × 322,442.70
  4. Step 4: Simplify right side
    455,412.30x = 220,266,557,437.82
  5. Step 5: Solve for x
    x = 220,266,557,437.82/455,412.30
  6. Step 6: Final answer
    x = 483,664.05

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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.