Home / 1,097,639.40-1,646,459.10-720,940.80

Finding the Fourth Proportional to 1,097,639.40, 1,646,459.10 and 720,940.80

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Solution

The fourth proportional to 1,097,639.40, 1,646,459.10 and 720,940.80 is: 1,081,411.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,097,639.40 : 1,646,459.10 = 720,940.80 : x
  2. Step 2: Convert to fraction form
    1,097,639.40/1,646,459.10 = 720,940.80/x
  3. Step 3: Cross multiply
    1,097,639.40x = 1,646,459.10 × 720,940.80
  4. Step 4: Simplify right side
    1,097,639.40x = 1,186,999,540,721.28
  5. Step 5: Solve for x
    x = 1,186,999,540,721.28/1,097,639.40
  6. Step 6: Final answer
    x = 1,081,411.20

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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.