Home / 685,250.05-945,633.59-379,319.89

Finding the Fourth Proportional to 685,250.05, 945,633.59 and 379,319.89

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Solution

The fourth proportional to 685,250.05, 945,633.59 and 379,319.89 is: 523,455.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,250.05 : 945,633.59 = 379,319.89 : x
  2. Step 2: Convert to fraction form
    685,250.05/945,633.59 = 379,319.89/x
  3. Step 3: Cross multiply
    685,250.05x = 945,633.59 × 379,319.89
  4. Step 4: Simplify right side
    685,250.05x = 358,697,625,614.34
  5. Step 5: Solve for x
    x = 358,697,625,614.34/685,250.05
  6. Step 6: Final answer
    x = 523,455.09

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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.