Home / 640,056.46-960,081.20-260,975.72

Finding the Fourth Proportional to 640,056.46, 960,081.20 and 260,975.72

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Solution

The fourth proportional to 640,056.46, 960,081.20 and 260,975.72 is: 391,462.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,056.46 : 960,081.20 = 260,975.72 : x
  2. Step 2: Convert to fraction form
    640,056.46/960,081.20 = 260,975.72/x
  3. Step 3: Cross multiply
    640,056.46x = 960,081.20 × 260,975.72
  4. Step 4: Simplify right side
    640,056.46x = 250,557,882,428.46
  5. Step 5: Solve for x
    x = 250,557,882,428.46/640,056.46
  6. Step 6: Final answer
    x = 391,462.16

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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.