Home / 1,389,420.80-2,083,612.80-547,798.40

Finding the Fourth Proportional to 1,389,420.80, 2,083,612.80 and 547,798.40

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Solution

The fourth proportional to 1,389,420.80, 2,083,612.80 and 547,798.40 is: 821,493.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,420.80 : 2,083,612.80 = 547,798.40 : x
  2. Step 2: Convert to fraction form
    1,389,420.80/2,083,612.80 = 547,798.40/x
  3. Step 3: Cross multiply
    1,389,420.80x = 2,083,612.80 × 547,798.40
  4. Step 4: Simplify right side
    1,389,420.80x = 1,141,399,758,059.52
  5. Step 5: Solve for x
    x = 1,141,399,758,059.52/1,389,420.80
  6. Step 6: Final answer
    x = 821,493.21

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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.