Home / 445,085.95-665,721.53-412,779.18

Finding the Fourth Proportional to 445,085.95, 665,721.53 and 412,779.18

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Solution

The fourth proportional to 445,085.95, 665,721.53 and 412,779.18 is: 617,399.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,085.95 : 665,721.53 = 412,779.18 : x
  2. Step 2: Convert to fraction form
    445,085.95/665,721.53 = 412,779.18/x
  3. Step 3: Cross multiply
    445,085.95x = 665,721.53 × 412,779.18
  4. Step 4: Simplify right side
    445,085.95x = 274,795,986,629.39
  5. Step 5: Solve for x
    x = 274,795,986,629.39/445,085.95
  6. Step 6: Final answer
    x = 617,399.82

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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.