Home / 685,425.49-945,916.74-379,501.88

Finding the Fourth Proportional to 685,425.49, 945,916.74 and 379,501.88

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Solution

The fourth proportional to 685,425.49, 945,916.74 and 379,501.88 is: 523,728.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,425.49 : 945,916.74 = 379,501.88 : x
  2. Step 2: Convert to fraction form
    685,425.49/945,916.74 = 379,501.88/x
  3. Step 3: Cross multiply
    685,425.49x = 945,916.74 × 379,501.88
  4. Step 4: Simplify right side
    685,425.49x = 358,977,181,153.47
  5. Step 5: Solve for x
    x = 358,977,181,153.47/685,425.49
  6. Step 6: Final answer
    x = 523,728.96

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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.