Home / 715,735.22-1,075,023.61-428,100.98

Finding the Fourth Proportional to 715,735.22, 1,075,023.61 and 428,100.98

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Solution

The fourth proportional to 715,735.22, 1,075,023.61 and 428,100.98 is: 643,001.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,735.22 : 1,075,023.61 = 428,100.98 : x
  2. Step 2: Convert to fraction form
    715,735.22/1,075,023.61 = 428,100.98/x
  3. Step 3: Cross multiply
    715,735.22x = 1,075,023.61 × 428,100.98
  4. Step 4: Simplify right side
    715,735.22x = 460,218,654,518.77
  5. Step 5: Solve for x
    x = 460,218,654,518.77/715,735.22
  6. Step 6: Final answer
    x = 643,001.27

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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.