Home / 715,070,287.20-1,072,605,430.80-388,552,936.80

Finding the Fourth Proportional to 715,070,287.20, 1,072,605,430.80 and 388,552,936.80

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Solution

The fourth proportional to 715,070,287.20, 1,072,605,430.80 and 388,552,936.80 is: 582,829,405.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,070,287.20 : 1,072,605,430.80 = 388,552,936.80 : x
  2. Step 2: Convert to fraction form
    715,070,287.20/1,072,605,430.80 = 388,552,936.80/x
  3. Step 3: Cross multiply
    715,070,287.20x = 1,072,605,430.80 × 388,552,936.80
  4. Step 4: Simplify right side
    715,070,287.20x = 416,763,990,164,969,152
  5. Step 5: Solve for x
    x = 416,763,990,164,969,152/715,070,287.20
  6. Step 6: Final answer
    x = 582,829,405.20

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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.