Home / 787,286.08-1,086,142.08-484,955.20

Finding the Fourth Proportional to 787,286.08, 1,086,142.08 and 484,955.20

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Solution

The fourth proportional to 787,286.08, 1,086,142.08 and 484,955.20 is: 669,045.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,286.08 : 1,086,142.08 = 484,955.20 : x
  2. Step 2: Convert to fraction form
    787,286.08/1,086,142.08 = 484,955.20/x
  3. Step 3: Cross multiply
    787,286.08x = 1,086,142.08 × 484,955.20
  4. Step 4: Simplify right side
    787,286.08x = 526,730,249,634.82
  5. Step 5: Solve for x
    x = 526,730,249,634.82/787,286.08
  6. Step 6: Final answer
    x = 669,045.55

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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.