Home / 1,238,438.70-1,855,908.45-916,074.90

Finding the Fourth Proportional to 1,238,438.70, 1,855,908.45 and 916,074.90

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Solution

The fourth proportional to 1,238,438.70, 1,855,908.45 and 916,074.90 is: 1,372,818.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,438.70 : 1,855,908.45 = 916,074.90 : x
  2. Step 2: Convert to fraction form
    1,238,438.70/1,855,908.45 = 916,074.90/x
  3. Step 3: Cross multiply
    1,238,438.70x = 1,855,908.45 × 916,074.90
  4. Step 4: Simplify right side
    1,238,438.70x = 1,700,151,147,742.91
  5. Step 5: Solve for x
    x = 1,700,151,147,742.91/1,238,438.70
  6. Step 6: Final answer
    x = 1,372,818.17

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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.