Home / 1,289,106.61-1,778,345.11-858,836.23

Finding the Fourth Proportional to 1,289,106.61, 1,778,345.11 and 858,836.23

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Solution

The fourth proportional to 1,289,106.61, 1,778,345.11 and 858,836.23 is: 1,184,779.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,106.61 : 1,778,345.11 = 858,836.23 : x
  2. Step 2: Convert to fraction form
    1,289,106.61/1,778,345.11 = 858,836.23/x
  3. Step 3: Cross multiply
    1,289,106.61x = 1,778,345.11 × 858,836.23
  4. Step 4: Simplify right side
    1,289,106.61x = 1,527,307,206,539.02
  5. Step 5: Solve for x
    x = 1,527,307,206,539.02/1,289,106.61
  6. Step 6: Final answer
    x = 1,184,779.60

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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.