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Finding the Fourth Proportional to 666,760.93, 920,122.90 and 360,830.55

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Solution

The fourth proportional to 666,760.93, 920,122.90 and 360,830.55 is: 497,942.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,760.93 : 920,122.90 = 360,830.55 : x
  2. Step 2: Convert to fraction form
    666,760.93/920,122.90 = 360,830.55/x
  3. Step 3: Cross multiply
    666,760.93x = 920,122.90 × 360,830.55
  4. Step 4: Simplify right side
    666,760.93x = 332,008,452,074.60
  5. Step 5: Solve for x
    x = 332,008,452,074.60/666,760.93
  6. Step 6: Final answer
    x = 497,942.27

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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.