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Finding the Fourth Proportional to 891,130.04, 1,336,672.86 and 260,049.32

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Solution

The fourth proportional to 891,130.04, 1,336,672.86 and 260,049.32 is: 390,067.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,130.04 : 1,336,672.86 = 260,049.32 : x
  2. Step 2: Convert to fraction form
    891,130.04/1,336,672.86 = 260,049.32/x
  3. Step 3: Cross multiply
    891,130.04x = 1,336,672.86 × 260,049.32
  4. Step 4: Simplify right side
    891,130.04x = 347,600,868,305.46
  5. Step 5: Solve for x
    x = 347,600,868,305.46/891,130.04
  6. Step 6: Final answer
    x = 390,067.50

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.