Home / 1,289,106.28-1,778,344.68-858,835.90

Finding the Fourth Proportional to 1,289,106.28, 1,778,344.68 and 858,835.90

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Solution

The fourth proportional to 1,289,106.28, 1,778,344.68 and 858,835.90 is: 1,184,779.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,106.28 : 1,778,344.68 = 858,835.90 : x
  2. Step 2: Convert to fraction form
    1,289,106.28/1,778,344.68 = 858,835.90/x
  3. Step 3: Cross multiply
    1,289,106.28x = 1,778,344.68 × 858,835.90
  4. Step 4: Simplify right side
    1,289,106.28x = 1,527,306,253,758.01
  5. Step 5: Solve for x
    x = 1,527,306,253,758.01/1,289,106.28
  6. Step 6: Final answer
    x = 1,184,779.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.