Home / 2,148,631.80-2,964,117.89-1,287,697.38

Finding the Fourth Proportional to 2,148,631.80, 2,964,117.89 and 1,287,697.38

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Solution

The fourth proportional to 2,148,631.80, 2,964,117.89 and 1,287,697.38 is: 1,776,426.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148,631.80 : 2,964,117.89 = 1,287,697.38 : x
  2. Step 2: Convert to fraction form
    2,148,631.80/2,964,117.89 = 1,287,697.38/x
  3. Step 3: Cross multiply
    2,148,631.80x = 2,964,117.89 × 1,287,697.38
  4. Step 4: Simplify right side
    2,148,631.80x = 3,816,886,834,525.64
  5. Step 5: Solve for x
    x = 3,816,886,834,525.64/2,148,631.80
  6. Step 6: Final answer
    x = 1,776,426.67

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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.