Home / 613,923.30-921,009.96-258,938.64

Finding the Fourth Proportional to 613,923.30, 921,009.96 and 258,938.64

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Solution

The fourth proportional to 613,923.30, 921,009.96 and 258,938.64 is: 388,460.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,923.30 : 921,009.96 = 258,938.64 : x
  2. Step 2: Convert to fraction form
    613,923.30/921,009.96 = 258,938.64/x
  3. Step 3: Cross multiply
    613,923.30x = 921,009.96 × 258,938.64
  4. Step 4: Simplify right side
    613,923.30x = 238,485,066,468.85
  5. Step 5: Solve for x
    x = 238,485,066,468.85/613,923.30
  6. Step 6: Final answer
    x = 388,460.69

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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.