Home / 1,319,943,739.80-1,977,648,128.10-628,361,851.80

Finding the Fourth Proportional to 1,319,943,739.80, 1,977,648,128.10 and 628,361,851.80

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Solution

The fourth proportional to 1,319,943,739.80, 1,977,648,128.10 and 628,361,851.80 is: 941,463,338.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,943,739.80 : 1,977,648,128.10 = 628,361,851.80 : x
  2. Step 2: Convert to fraction form
    1,319,943,739.80/1,977,648,128.10 = 628,361,851.80/x
  3. Step 3: Cross multiply
    1,319,943,739.80x = 1,977,648,128.10 × 628,361,851.80
  4. Step 4: Simplify right side
    1,319,943,739.80x = 1,242,678,639,981,719,552
  5. Step 5: Solve for x
    x = 1,242,678,639,981,719,552/1,319,943,739.80
  6. Step 6: Final answer
    x = 941,463,338.56

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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.