Home / 780,026.30-1,170,039.45-442,936.70

Finding the Fourth Proportional to 780,026.30, 1,170,039.45 and 442,936.70

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Solution

The fourth proportional to 780,026.30, 1,170,039.45 and 442,936.70 is: 664,405.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,026.30 : 1,170,039.45 = 442,936.70 : x
  2. Step 2: Convert to fraction form
    780,026.30/1,170,039.45 = 442,936.70/x
  3. Step 3: Cross multiply
    780,026.30x = 1,170,039.45 × 442,936.70
  4. Step 4: Simplify right side
    780,026.30x = 518,253,412,852.82
  5. Step 5: Solve for x
    x = 518,253,412,852.82/780,026.30
  6. Step 6: Final answer
    x = 664,405.05

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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.