Home / 1,205,459.80-1,808,189.70-939,419.80

Finding the Fourth Proportional to 1,205,459.80, 1,808,189.70 and 939,419.80

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Solution

The fourth proportional to 1,205,459.80, 1,808,189.70 and 939,419.80 is: 1,409,129.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,459.80 : 1,808,189.70 = 939,419.80 : x
  2. Step 2: Convert to fraction form
    1,205,459.80/1,808,189.70 = 939,419.80/x
  3. Step 3: Cross multiply
    1,205,459.80x = 1,808,189.70 × 939,419.80
  4. Step 4: Simplify right side
    1,205,459.80x = 1,698,649,206,336.06
  5. Step 5: Solve for x
    x = 1,698,649,206,336.06/1,205,459.80
  6. Step 6: Final answer
    x = 1,409,129.70

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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.