Home / 899,685.36-1,241,565.74-491,788.90

Finding the Fourth Proportional to 899,685.36, 1,241,565.74 and 491,788.90

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Solution

The fourth proportional to 899,685.36, 1,241,565.74 and 491,788.90 is: 678,668.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,685.36 : 1,241,565.74 = 491,788.90 : x
  2. Step 2: Convert to fraction form
    899,685.36/1,241,565.74 = 491,788.90/x
  3. Step 3: Cross multiply
    899,685.36x = 1,241,565.74 × 491,788.90
  4. Step 4: Simplify right side
    899,685.36x = 610,588,249,552.29
  5. Step 5: Solve for x
    x = 610,588,249,552.29/899,685.36
  6. Step 6: Final answer
    x = 678,668.65

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Double scale
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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.