Home / 612,479.07-918,718.61-191,787.75

Finding the Fourth Proportional to 612,479.07, 918,718.61 and 191,787.75

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Solution

The fourth proportional to 612,479.07, 918,718.61 and 191,787.75 is: 287,681.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,479.07 : 918,718.61 = 191,787.75 : x
  2. Step 2: Convert to fraction form
    612,479.07/918,718.61 = 191,787.75/x
  3. Step 3: Cross multiply
    612,479.07x = 918,718.61 × 191,787.75
  4. Step 4: Simplify right side
    612,479.07x = 176,198,974,136.09
  5. Step 5: Solve for x
    x = 176,198,974,136.09/612,479.07
  6. Step 6: Final answer
    x = 287,681.63

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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.