Home / 899,191.51-1,240,869.60-491,284.58

Finding the Fourth Proportional to 899,191.51, 1,240,869.60 and 491,284.58

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Solution

The fourth proportional to 899,191.51, 1,240,869.60 and 491,284.58 is: 677,964.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,191.51 : 1,240,869.60 = 491,284.58 : x
  2. Step 2: Convert to fraction form
    899,191.51/1,240,869.60 = 491,284.58/x
  3. Step 3: Cross multiply
    899,191.51x = 1,240,869.60 × 491,284.58
  4. Step 4: Simplify right side
    899,191.51x = 609,620,094,066.42
  5. Step 5: Solve for x
    x = 609,620,094,066.42/899,191.51
  6. Step 6: Final answer
    x = 677,964.69

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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.