Home / 746,075.43-1,118,170.91-319,103.78

Finding the Fourth Proportional to 746,075.43, 1,118,170.91 and 319,103.78

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Solution

The fourth proportional to 746,075.43, 1,118,170.91 and 319,103.78 is: 478,252.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    746,075.43 : 1,118,170.91 = 319,103.78 : x
  2. Step 2: Convert to fraction form
    746,075.43/1,118,170.91 = 319,103.78/x
  3. Step 3: Cross multiply
    746,075.43x = 1,118,170.91 × 319,103.78
  4. Step 4: Simplify right side
    746,075.43x = 356,812,559,273.95
  5. Step 5: Solve for x
    x = 356,812,559,273.95/746,075.43
  6. Step 6: Final answer
    x = 478,252.66

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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.