Home / 1,152,085.20-1,728,127.80-730,107.60

Finding the Fourth Proportional to 1,152,085.20, 1,728,127.80 and 730,107.60

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Solution

The fourth proportional to 1,152,085.20, 1,728,127.80 and 730,107.60 is: 1,095,161.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,085.20 : 1,728,127.80 = 730,107.60 : x
  2. Step 2: Convert to fraction form
    1,152,085.20/1,728,127.80 = 730,107.60/x
  3. Step 3: Cross multiply
    1,152,085.20x = 1,728,127.80 × 730,107.60
  4. Step 4: Simplify right side
    1,152,085.20x = 1,261,719,240,551.28
  5. Step 5: Solve for x
    x = 1,261,719,240,551.28/1,152,085.20
  6. Step 6: Final answer
    x = 1,095,161.40

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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.