Home / 388,306,970.50-582,462,633.18-129,521,480.30

Finding the Fourth Proportional to 388,306,970.50, 582,462,633.18 and 129,521,480.30

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Solution

The fourth proportional to 388,306,970.50, 582,462,633.18 and 129,521,480.30 is: 194,282,946.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,306,970.50 : 582,462,633.18 = 129,521,480.30 : x
  2. Step 2: Convert to fraction form
    388,306,970.50/582,462,633.18 = 129,521,480.30/x
  3. Step 3: Cross multiply
    388,306,970.50x = 582,462,633.18 × 129,521,480.30
  4. Step 4: Simplify right side
    388,306,970.50x = 75,441,422,468,909,488
  5. Step 5: Solve for x
    x = 75,441,422,468,909,488/388,306,970.50
  6. Step 6: Final answer
    x = 194,282,946.74

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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.