Home / 787,181.40-1,086,298.23-438,319.38

Finding the Fourth Proportional to 787,181.40, 1,086,298.23 and 438,319.38

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Solution

The fourth proportional to 787,181.40, 1,086,298.23 and 438,319.38 is: 604,874.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,181.40 : 1,086,298.23 = 438,319.38 : x
  2. Step 2: Convert to fraction form
    787,181.40/1,086,298.23 = 438,319.38/x
  3. Step 3: Cross multiply
    787,181.40x = 1,086,298.23 × 438,319.38
  4. Step 4: Simplify right side
    787,181.40x = 476,145,566,668.70
  5. Step 5: Solve for x
    x = 476,145,566,668.70/787,181.40
  6. Step 6: Final answer
    x = 604,874.01

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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.