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Finding the Fourth Proportional to 489,075.10, 733,612.65 and 279,123.10

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Solution

The fourth proportional to 489,075.10, 733,612.65 and 279,123.10 is: 418,684.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,075.10 : 733,612.65 = 279,123.10 : x
  2. Step 2: Convert to fraction form
    489,075.10/733,612.65 = 279,123.10/x
  3. Step 3: Cross multiply
    489,075.10x = 733,612.65 × 279,123.10
  4. Step 4: Simplify right side
    489,075.10x = 204,768,237,067.22
  5. Step 5: Solve for x
    x = 204,768,237,067.22/489,075.10
  6. Step 6: Final answer
    x = 418,684.65

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Similar ratio
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1.5x scale

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.