Home / 626,419,390.40-939,629,085.60-166,428,555.20

Finding the Fourth Proportional to 626,419,390.40, 939,629,085.60 and 166,428,555.20

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Solution

The fourth proportional to 626,419,390.40, 939,629,085.60 and 166,428,555.20 is: 249,642,832.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,419,390.40 : 939,629,085.60 = 166,428,555.20 : x
  2. Step 2: Convert to fraction form
    626,419,390.40/939,629,085.60 = 166,428,555.20/x
  3. Step 3: Cross multiply
    626,419,390.40x = 939,629,085.60 × 166,428,555.20
  4. Step 4: Simplify right side
    626,419,390.40x = 156,381,111,140,305,120
  5. Step 5: Solve for x
    x = 156,381,111,140,305,120/626,419,390.40
  6. Step 6: Final answer
    x = 249,642,832.80

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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.