Home / 715,070,291.20-1,072,605,436.80-388,552,940.80

Finding the Fourth Proportional to 715,070,291.20, 1,072,605,436.80 and 388,552,940.80

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Solution

The fourth proportional to 715,070,291.20, 1,072,605,436.80 and 388,552,940.80 is: 582,829,411.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,070,291.20 : 1,072,605,436.80 = 388,552,940.80 : x
  2. Step 2: Convert to fraction form
    715,070,291.20/1,072,605,436.80 = 388,552,940.80/x
  3. Step 3: Cross multiply
    715,070,291.20x = 1,072,605,436.80 × 388,552,940.80
  4. Step 4: Simplify right side
    715,070,291.20x = 416,763,996,786,708,544
  5. Step 5: Solve for x
    x = 416,763,996,786,708,544/715,070,291.20
  6. Step 6: Final answer
    x = 582,829,411.20

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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.