Home / 388,049,456.80-582,155,055.60-129,345,047.20

Finding the Fourth Proportional to 388,049,456.80, 582,155,055.60 and 129,345,047.20

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Solution

The fourth proportional to 388,049,456.80, 582,155,055.60 and 129,345,047.20 is: 194,044,526.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,049,456.80 : 582,155,055.60 = 129,345,047.20 : x
  2. Step 2: Convert to fraction form
    388,049,456.80/582,155,055.60 = 129,345,047.20/x
  3. Step 3: Cross multiply
    388,049,456.80x = 582,155,055.60 × 129,345,047.20
  4. Step 4: Simplify right side
    388,049,456.80x = 75,298,873,144,300,624
  5. Step 5: Solve for x
    x = 75,298,873,144,300,624/388,049,456.80
  6. Step 6: Final answer
    x = 194,044,526.61

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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.