Home / 853,736.25-1,178,352.45-491,369.40

Finding the Fourth Proportional to 853,736.25, 1,178,352.45 and 491,369.40

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Solution

The fourth proportional to 853,736.25, 1,178,352.45 and 491,369.40 is: 678,202.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,736.25 : 1,178,352.45 = 491,369.40 : x
  2. Step 2: Convert to fraction form
    853,736.25/1,178,352.45 = 491,369.40/x
  3. Step 3: Cross multiply
    853,736.25x = 1,178,352.45 × 491,369.40
  4. Step 4: Simplify right side
    853,736.25x = 579,006,336,345.03
  5. Step 5: Solve for x
    x = 579,006,336,345.03/853,736.25
  6. Step 6: Final answer
    x = 678,202.82

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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.