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Finding the Fourth Proportional to 680,504, 939,095.52 and 378,698.24

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Solution

The fourth proportional to 680,504, 939,095.52 and 378,698.24 is: 522,603.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,504 : 939,095.52 = 378,698.24 : x
  2. Step 2: Convert to fraction form
    680,504/939,095.52 = 378,698.24/x
  3. Step 3: Cross multiply
    680,504x = 939,095.52 × 378,698.24
  4. Step 4: Simplify right side
    680,504x = 355,633,820,615.89
  5. Step 5: Solve for x
    x = 355,633,820,615.89/680,504
  6. Step 6: Final answer
    x = 522,603.57

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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.