Home / 1,431,648,621.76-1,975,644,131.90-828,844,665.64

Finding the Fourth Proportional to 1,431,648,621.76, 1,975,644,131.90 and 828,844,665.64

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Solution

The fourth proportional to 1,431,648,621.76, 1,975,644,131.90 and 828,844,665.64 is: 1,143,787,710.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,648,621.76 : 1,975,644,131.90 = 828,844,665.64 : x
  2. Step 2: Convert to fraction form
    1,431,648,621.76/1,975,644,131.90 = 828,844,665.64/x
  3. Step 3: Cross multiply
    1,431,648,621.76x = 1,975,644,131.90 × 828,844,665.64
  4. Step 4: Simplify right side
    1,431,648,621.76x = 1,637,502,099,925,416,704
  5. Step 5: Solve for x
    x = 1,637,502,099,925,416,704/1,431,648,621.76
  6. Step 6: Final answer
    x = 1,143,787,710.92

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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.