Home / 1,240,639.65-1,862,709.08-768,247.65

Finding the Fourth Proportional to 1,240,639.65, 1,862,709.08 and 768,247.65

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Solution

The fourth proportional to 1,240,639.65, 1,862,709.08 and 768,247.65 is: 1,153,454.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,639.65 : 1,862,709.08 = 768,247.65 : x
  2. Step 2: Convert to fraction form
    1,240,639.65/1,862,709.08 = 768,247.65/x
  3. Step 3: Cross multiply
    1,240,639.65x = 1,862,709.08 × 768,247.65
  4. Step 4: Simplify right side
    1,240,639.65x = 1,431,021,869,502.42
  5. Step 5: Solve for x
    x = 1,431,021,869,502.42/1,240,639.65
  6. Step 6: Final answer
    x = 1,153,454.89

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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.