Home / 685,424.45-945,915.30-379,500.83

Finding the Fourth Proportional to 685,424.45, 945,915.30 and 379,500.83

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Solution

The fourth proportional to 685,424.45, 945,915.30 and 379,500.83 is: 523,727.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,424.45 : 945,915.30 = 379,500.83 : x
  2. Step 2: Convert to fraction form
    685,424.45/945,915.30 = 379,500.83/x
  3. Step 3: Cross multiply
    685,424.45x = 945,915.30 × 379,500.83
  4. Step 4: Simplify right side
    685,424.45x = 358,975,636,730.12
  5. Step 5: Solve for x
    x = 358,975,636,730.12/685,424.45
  6. Step 6: Final answer
    x = 523,727.50

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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.