Home / 1,187,395.40-1,780,920.30-345,859.40

Finding the Fourth Proportional to 1,187,395.40, 1,780,920.30 and 345,859.40

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Solution

The fourth proportional to 1,187,395.40, 1,780,920.30 and 345,859.40 is: 518,738.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,395.40 : 1,780,920.30 = 345,859.40 : x
  2. Step 2: Convert to fraction form
    1,187,395.40/1,780,920.30 = 345,859.40/x
  3. Step 3: Cross multiply
    1,187,395.40x = 1,780,920.30 × 345,859.40
  4. Step 4: Simplify right side
    1,187,395.40x = 615,948,026,405.82
  5. Step 5: Solve for x
    x = 615,948,026,405.82/1,187,395.40
  6. Step 6: Final answer
    x = 518,738.77

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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.