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Finding the Fourth Proportional to 777,658.75, 1,073,169.08 and 419,962.75

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Solution

The fourth proportional to 777,658.75, 1,073,169.08 and 419,962.75 is: 579,548.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,658.75 : 1,073,169.08 = 419,962.75 : x
  2. Step 2: Convert to fraction form
    777,658.75/1,073,169.08 = 419,962.75/x
  3. Step 3: Cross multiply
    777,658.75x = 1,073,169.08 × 419,962.75
  4. Step 4: Simplify right side
    777,658.75x = 450,691,038,051.77
  5. Step 5: Solve for x
    x = 450,691,038,051.77/777,658.75
  6. Step 6: Final answer
    x = 579,548.60

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1.5x scale

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.