Home / 664,918.20-998,003.70-349,601.40

Finding the Fourth Proportional to 664,918.20, 998,003.70 and 349,601.40

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Solution

The fourth proportional to 664,918.20, 998,003.70 and 349,601.40 is: 524,731.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,918.20 : 998,003.70 = 349,601.40 : x
  2. Step 2: Convert to fraction form
    664,918.20/998,003.70 = 349,601.40/x
  3. Step 3: Cross multiply
    664,918.20x = 998,003.70 × 349,601.40
  4. Step 4: Simplify right side
    664,918.20x = 348,903,490,725.18
  5. Step 5: Solve for x
    x = 348,903,490,725.18/664,918.20
  6. Step 6: Final answer
    x = 524,731.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.