Home / 1,155,999.80-1,733,999.70-778,086.20

Finding the Fourth Proportional to 1,155,999.80, 1,733,999.70 and 778,086.20

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Solution

The fourth proportional to 1,155,999.80, 1,733,999.70 and 778,086.20 is: 1,167,129.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155,999.80 : 1,733,999.70 = 778,086.20 : x
  2. Step 2: Convert to fraction form
    1,155,999.80/1,733,999.70 = 778,086.20/x
  3. Step 3: Cross multiply
    1,155,999.80x = 1,733,999.70 × 778,086.20
  4. Step 4: Simplify right side
    1,155,999.80x = 1,349,201,237,374.14
  5. Step 5: Solve for x
    x = 1,349,201,237,374.14/1,155,999.80
  6. Step 6: Final answer
    x = 1,167,129.30

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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.