Home / 1,290,772.80-1,936,280.61-379,955.87

Finding the Fourth Proportional to 1,290,772.80, 1,936,280.61 and 379,955.87

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Solution

The fourth proportional to 1,290,772.80, 1,936,280.61 and 379,955.87 is: 569,969.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,772.80 : 1,936,280.61 = 379,955.87 : x
  2. Step 2: Convert to fraction form
    1,290,772.80/1,936,280.61 = 379,955.87/x
  3. Step 3: Cross multiply
    1,290,772.80x = 1,936,280.61 × 379,955.87
  4. Step 4: Simplify right side
    1,290,772.80x = 735,701,174,055.28
  5. Step 5: Solve for x
    x = 735,701,174,055.28/1,290,772.80
  6. Step 6: Final answer
    x = 569,969.54

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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.