Home / 489,429.40-734,411.58-189,921.76

Finding the Fourth Proportional to 489,429.40, 734,411.58 and 189,921.76

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Solution

The fourth proportional to 489,429.40, 734,411.58 and 189,921.76 is: 284,986.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,429.40 : 734,411.58 = 189,921.76 : x
  2. Step 2: Convert to fraction form
    489,429.40/734,411.58 = 189,921.76/x
  3. Step 3: Cross multiply
    489,429.40x = 734,411.58 × 189,921.76
  4. Step 4: Simplify right side
    489,429.40x = 139,480,739,837.98
  5. Step 5: Solve for x
    x = 139,480,739,837.98/489,429.40
  6. Step 6: Final answer
    x = 284,986.43

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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.