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Finding the Fourth Proportional to 925,871.40, 1,388,807.10 and 768,407.40

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Solution

The fourth proportional to 925,871.40, 1,388,807.10 and 768,407.40 is: 1,152,611.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    925,871.40 : 1,388,807.10 = 768,407.40 : x
  2. Step 2: Convert to fraction form
    925,871.40/1,388,807.10 = 768,407.40/x
  3. Step 3: Cross multiply
    925,871.40x = 1,388,807.10 × 768,407.40
  4. Step 4: Simplify right side
    925,871.40x = 1,067,169,652,812.54
  5. Step 5: Solve for x
    x = 1,067,169,652,812.54/925,871.40
  6. Step 6: Final answer
    x = 1,152,611.10

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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.