Home / 489,685.18-734,277.69-287,675.83

Finding the Fourth Proportional to 489,685.18, 734,277.69 and 287,675.83

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Solution

The fourth proportional to 489,685.18, 734,277.69 and 287,675.83 is: 431,366.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,685.18 : 734,277.69 = 287,675.83 : x
  2. Step 2: Convert to fraction form
    489,685.18/734,277.69 = 287,675.83/x
  3. Step 3: Cross multiply
    489,685.18x = 734,277.69 × 287,675.83
  4. Step 4: Simplify right side
    489,685.18x = 211,233,943,921.23
  5. Step 5: Solve for x
    x = 211,233,943,921.23/489,685.18
  6. Step 6: Final answer
    x = 431,366.83

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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.