Home / 689,979.89-952,172.13-384,049.70

Finding the Fourth Proportional to 689,979.89, 952,172.13 and 384,049.70

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Solution

The fourth proportional to 689,979.89, 952,172.13 and 384,049.70 is: 529,988.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,979.89 : 952,172.13 = 384,049.70 : x
  2. Step 2: Convert to fraction form
    689,979.89/952,172.13 = 384,049.70/x
  3. Step 3: Cross multiply
    689,979.89x = 952,172.13 × 384,049.70
  4. Step 4: Simplify right side
    689,979.89x = 365,681,416,114.00
  5. Step 5: Solve for x
    x = 365,681,416,114.00/689,979.89
  6. Step 6: Final answer
    x = 529,988.51

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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.