Home / 640,683.20-884,115.04-350,289.44

Finding the Fourth Proportional to 640,683.20, 884,115.04 and 350,289.44

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Solution

The fourth proportional to 640,683.20, 884,115.04 and 350,289.44 is: 483,384.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,683.20 : 884,115.04 = 350,289.44 : x
  2. Step 2: Convert to fraction form
    640,683.20/884,115.04 = 350,289.44/x
  3. Step 3: Cross multiply
    640,683.20x = 884,115.04 × 350,289.44
  4. Step 4: Simplify right side
    640,683.20x = 309,696,162,257.18
  5. Step 5: Solve for x
    x = 309,696,162,257.18/640,683.20
  6. Step 6: Final answer
    x = 483,384.24

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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.