Home / 1,286,509.80-1,928,151.90-655,674.60

Finding the Fourth Proportional to 1,286,509.80, 1,928,151.90 and 655,674.60

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Solution

The fourth proportional to 1,286,509.80, 1,928,151.90 and 655,674.60 is: 982,689.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,509.80 : 1,928,151.90 = 655,674.60 : x
  2. Step 2: Convert to fraction form
    1,286,509.80/1,928,151.90 = 655,674.60/x
  3. Step 3: Cross multiply
    1,286,509.80x = 1,928,151.90 × 655,674.60
  4. Step 4: Simplify right side
    1,286,509.80x = 1,264,240,225,771.74
  5. Step 5: Solve for x
    x = 1,264,240,225,771.74/1,286,509.80
  6. Step 6: Final answer
    x = 982,689.93

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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.