Home / 671,189.70-1,006,784.55-405,768.90

Finding the Fourth Proportional to 671,189.70, 1,006,784.55 and 405,768.90

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Solution

The fourth proportional to 671,189.70, 1,006,784.55 and 405,768.90 is: 608,653.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,189.70 : 1,006,784.55 = 405,768.90 : x
  2. Step 2: Convert to fraction form
    671,189.70/1,006,784.55 = 405,768.90/x
  3. Step 3: Cross multiply
    671,189.70x = 1,006,784.55 × 405,768.90
  4. Step 4: Simplify right side
    671,189.70x = 408,521,859,390.50
  5. Step 5: Solve for x
    x = 408,521,859,390.50/671,189.70
  6. Step 6: Final answer
    x = 608,653.35

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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.