Home / 679,628.86-1,019,886.81-253,505.56

Finding the Fourth Proportional to 679,628.86, 1,019,886.81 and 253,505.56

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Solution

The fourth proportional to 679,628.86, 1,019,886.81 and 253,505.56 is: 380,423.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,628.86 : 1,019,886.81 = 253,505.56 : x
  2. Step 2: Convert to fraction form
    679,628.86/1,019,886.81 = 253,505.56/x
  3. Step 3: Cross multiply
    679,628.86x = 1,019,886.81 × 253,505.56
  4. Step 4: Simplify right side
    679,628.86x = 258,546,976,905.66
  5. Step 5: Solve for x
    x = 258,546,976,905.66/679,628.86
  6. Step 6: Final answer
    x = 380,423.78

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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.