Home / 1,185,420.54-1,778,315.37-386,516.70

Finding the Fourth Proportional to 1,185,420.54, 1,778,315.37 and 386,516.70

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Solution

The fourth proportional to 1,185,420.54, 1,778,315.37 and 386,516.70 is: 579,835.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,420.54 : 1,778,315.37 = 386,516.70 : x
  2. Step 2: Convert to fraction form
    1,185,420.54/1,778,315.37 = 386,516.70/x
  3. Step 3: Cross multiply
    1,185,420.54x = 1,778,315.37 × 386,516.70
  4. Step 4: Simplify right side
    1,185,420.54x = 687,348,588,371.68
  5. Step 5: Solve for x
    x = 687,348,588,371.68/1,185,420.54
  6. Step 6: Final answer
    x = 579,835.23

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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.