Home / 1,205,458.80-1,808,188.20-939,418.80

Finding the Fourth Proportional to 1,205,458.80, 1,808,188.20 and 939,418.80

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Solution

The fourth proportional to 1,205,458.80, 1,808,188.20 and 939,418.80 is: 1,409,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,458.80 : 1,808,188.20 = 939,418.80 : x
  2. Step 2: Convert to fraction form
    1,205,458.80/1,808,188.20 = 939,418.80/x
  3. Step 3: Cross multiply
    1,205,458.80x = 1,808,188.20 × 939,418.80
  4. Step 4: Simplify right side
    1,205,458.80x = 1,698,645,989,018.16
  5. Step 5: Solve for x
    x = 1,698,645,989,018.16/1,205,458.80
  6. Step 6: Final answer
    x = 1,409,128.20

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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.