Home / 912,956.92-1,369,659.50-643,611.40

Finding the Fourth Proportional to 912,956.92, 1,369,659.50 and 643,611.40

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Solution

The fourth proportional to 912,956.92, 1,369,659.50 and 643,611.40 is: 965,575.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,956.92 : 1,369,659.50 = 643,611.40 : x
  2. Step 2: Convert to fraction form
    912,956.92/1,369,659.50 = 643,611.40/x
  3. Step 3: Cross multiply
    912,956.92x = 1,369,659.50 × 643,611.40
  4. Step 4: Simplify right side
    912,956.92x = 881,528,468,318.30
  5. Step 5: Solve for x
    x = 881,528,468,318.30/912,956.92
  6. Step 6: Final answer
    x = 965,575.10

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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.