Home / 1,386,730.76-2,080,173.90-389,381

Finding the Fourth Proportional to 1,386,730.76, 2,080,173.90 and 389,381

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Solution

The fourth proportional to 1,386,730.76, 2,080,173.90 and 389,381 is: 584,093.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,730.76 : 2,080,173.90 = 389,381 : x
  2. Step 2: Convert to fraction form
    1,386,730.76/2,080,173.90 = 389,381/x
  3. Step 3: Cross multiply
    1,386,730.76x = 2,080,173.90 × 389,381
  4. Step 4: Simplify right side
    1,386,730.76x = 809,980,193,355.90
  5. Step 5: Solve for x
    x = 809,980,193,355.90/1,386,730.76
  6. Step 6: Final answer
    x = 584,093.33

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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.