Home / 772,139,348.60-1,065,552,987.69-419,715,339.32

Finding the Fourth Proportional to 772,139,348.60, 1,065,552,987.69 and 419,715,339.32

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Solution

The fourth proportional to 772,139,348.60, 1,065,552,987.69 and 419,715,339.32 is: 579,207,541.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,139,348.60 : 1,065,552,987.69 = 419,715,339.32 : x
  2. Step 2: Convert to fraction form
    772,139,348.60/1,065,552,987.69 = 419,715,339.32/x
  3. Step 3: Cross multiply
    772,139,348.60x = 1,065,552,987.69 × 419,715,339.32
  4. Step 4: Simplify right side
    772,139,348.60x = 447,228,933,794,412,032
  5. Step 5: Solve for x
    x = 447,228,933,794,412,032/772,139,348.60
  6. Step 6: Final answer
    x = 579,207,541.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.