Home / 899,685.36-1,241,565.75-491,788.92

Finding the Fourth Proportional to 899,685.36, 1,241,565.75 and 491,788.92

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Solution

The fourth proportional to 899,685.36, 1,241,565.75 and 491,788.92 is: 678,668.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,685.36 : 1,241,565.75 = 491,788.92 : x
  2. Step 2: Convert to fraction form
    899,685.36/1,241,565.75 = 491,788.92/x
  3. Step 3: Cross multiply
    899,685.36x = 1,241,565.75 × 491,788.92
  4. Step 4: Simplify right side
    899,685.36x = 610,588,279,301.49
  5. Step 5: Solve for x
    x = 610,588,279,301.49/899,685.36
  6. Step 6: Final answer
    x = 678,668.68

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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.