Home / 687,097.23-948,195.28-381,173.60

Finding the Fourth Proportional to 687,097.23, 948,195.28 and 381,173.60

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Solution

The fourth proportional to 687,097.23, 948,195.28 and 381,173.60 is: 526,020.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,097.23 : 948,195.28 = 381,173.60 : x
  2. Step 2: Convert to fraction form
    687,097.23/948,195.28 = 381,173.60/x
  3. Step 3: Cross multiply
    687,097.23x = 948,195.28 × 381,173.60
  4. Step 4: Simplify right side
    687,097.23x = 361,427,009,798.16
  5. Step 5: Solve for x
    x = 361,427,009,798.16/687,097.23
  6. Step 6: Final answer
    x = 526,020.18

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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.