Home / 1,259,685.12-1,890,619.57-661,069.20

Finding the Fourth Proportional to 1,259,685.12, 1,890,619.57 and 661,069.20

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Solution

The fourth proportional to 1,259,685.12, 1,890,619.57 and 661,069.20 is: 992,176.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,685.12 : 1,890,619.57 = 661,069.20 : x
  2. Step 2: Convert to fraction form
    1,259,685.12/1,890,619.57 = 661,069.20/x
  3. Step 3: Cross multiply
    1,259,685.12x = 1,890,619.57 × 661,069.20
  4. Step 4: Simplify right side
    1,259,685.12x = 1,249,830,370,841.89
  5. Step 5: Solve for x
    x = 1,249,830,370,841.89/1,259,685.12
  6. Step 6: Final answer
    x = 992,176.81

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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.