Home / 820,541.80-1,230,812.70-802,109.80

Finding the Fourth Proportional to 820,541.80, 1,230,812.70 and 802,109.80

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Solution

The fourth proportional to 820,541.80, 1,230,812.70 and 802,109.80 is: 1,203,164.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,541.80 : 1,230,812.70 = 802,109.80 : x
  2. Step 2: Convert to fraction form
    820,541.80/1,230,812.70 = 802,109.80/x
  3. Step 3: Cross multiply
    820,541.80x = 1,230,812.70 × 802,109.80
  4. Step 4: Simplify right side
    820,541.80x = 987,246,928,634.46
  5. Step 5: Solve for x
    x = 987,246,928,634.46/820,541.80
  6. Step 6: Final answer
    x = 1,203,164.70

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1.5x scale

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.