Home / 970,667,611.20-1,456,001,416.80-388,491,710.40

Finding the Fourth Proportional to 970,667,611.20, 1,456,001,416.80 and 388,491,710.40

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Solution

The fourth proportional to 970,667,611.20, 1,456,001,416.80 and 388,491,710.40 is: 582,737,565.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,667,611.20 : 1,456,001,416.80 = 388,491,710.40 : x
  2. Step 2: Convert to fraction form
    970,667,611.20/1,456,001,416.80 = 388,491,710.40/x
  3. Step 3: Cross multiply
    970,667,611.20x = 1,456,001,416.80 × 388,491,710.40
  4. Step 4: Simplify right side
    970,667,611.20x = 565,644,480,757,455,232
  5. Step 5: Solve for x
    x = 565,644,480,757,455,232/970,667,611.20
  6. Step 6: Final answer
    x = 582,737,565.60

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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.