Home / 899,688.21-1,241,569.62-491,791.65

Finding the Fourth Proportional to 899,688.21, 1,241,569.62 and 491,791.65

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Solution

The fourth proportional to 899,688.21, 1,241,569.62 and 491,791.65 is: 678,672.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,688.21 : 1,241,569.62 = 491,791.65 : x
  2. Step 2: Convert to fraction form
    899,688.21/1,241,569.62 = 491,791.65/x
  3. Step 3: Cross multiply
    899,688.21x = 1,241,569.62 × 491,791.65
  4. Step 4: Simplify right side
    899,688.21x = 610,593,572,009.67
  5. Step 5: Solve for x
    x = 610,593,572,009.67/899,688.21
  6. Step 6: Final answer
    x = 678,672.42

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.