Home / 768,311.08-1,060,329.36-428,830.36

Finding the Fourth Proportional to 768,311.08, 1,060,329.36 and 428,830.36

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Solution

The fourth proportional to 768,311.08, 1,060,329.36 and 428,830.36 is: 591,819.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,311.08 : 1,060,329.36 = 428,830.36 : x
  2. Step 2: Convert to fraction form
    768,311.08/1,060,329.36 = 428,830.36/x
  3. Step 3: Cross multiply
    768,311.08x = 1,060,329.36 × 428,830.36
  4. Step 4: Simplify right side
    768,311.08x = 454,701,421,167.37
  5. Step 5: Solve for x
    x = 454,701,421,167.37/768,311.08
  6. Step 6: Final answer
    x = 591,819.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.