Home / 780,828.40-1,171,415.40-360,002.80

Finding the Fourth Proportional to 780,828.40, 1,171,415.40 and 360,002.80

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Solution

The fourth proportional to 780,828.40, 1,171,415.40 and 360,002.80 is: 540,083.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,828.40 : 1,171,415.40 = 360,002.80 : x
  2. Step 2: Convert to fraction form
    780,828.40/1,171,415.40 = 360,002.80/x
  3. Step 3: Cross multiply
    780,828.40x = 1,171,415.40 × 360,002.80
  4. Step 4: Simplify right side
    780,828.40x = 421,712,823,963.12
  5. Step 5: Solve for x
    x = 421,712,823,963.12/780,828.40
  6. Step 6: Final answer
    x = 540,083.87

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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.