Home / 1,220,423.27-1,830,939.81-861,295.32

Finding the Fourth Proportional to 1,220,423.27, 1,830,939.81 and 861,295.32

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Solution

The fourth proportional to 1,220,423.27, 1,830,939.81 and 861,295.32 is: 1,292,158.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,423.27 : 1,830,939.81 = 861,295.32 : x
  2. Step 2: Convert to fraction form
    1,220,423.27/1,830,939.81 = 861,295.32/x
  3. Step 3: Cross multiply
    1,220,423.27x = 1,830,939.81 × 861,295.32
  4. Step 4: Simplify right side
    1,220,423.27x = 1,576,979,889,554.69
  5. Step 5: Solve for x
    x = 1,576,979,889,554.69/1,220,423.27
  6. Step 6: Final answer
    x = 1,292,158.17

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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.