Home / 563,863,119.32-778,067,995.77-312,978,085.44

Finding the Fourth Proportional to 563,863,119.32, 778,067,995.77 and 312,978,085.44

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Solution

The fourth proportional to 563,863,119.32, 778,067,995.77 and 312,978,085.44 is: 431,874,728.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,863,119.32 : 778,067,995.77 = 312,978,085.44 : x
  2. Step 2: Convert to fraction form
    563,863,119.32/778,067,995.77 = 312,978,085.44/x
  3. Step 3: Cross multiply
    563,863,119.32x = 778,067,995.77 × 312,978,085.44
  4. Step 4: Simplify right side
    563,863,119.32x = 243,518,231,658,232,608
  5. Step 5: Solve for x
    x = 243,518,231,658,232,608/563,863,119.32
  6. Step 6: Final answer
    x = 431,874,728.66

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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.