Home / 1,287,616,621.12-1,776,809,628.27-730,699,666.36

Finding the Fourth Proportional to 1,287,616,621.12, 1,776,809,628.27 and 730,699,666.36

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Solution

The fourth proportional to 1,287,616,621.12, 1,776,809,628.27 and 730,699,666.36 is: 1,008,308,048.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,616,621.12 : 1,776,809,628.27 = 730,699,666.36 : x
  2. Step 2: Convert to fraction form
    1,287,616,621.12/1,776,809,628.27 = 730,699,666.36/x
  3. Step 3: Cross multiply
    1,287,616,621.12x = 1,776,809,628.27 × 730,699,666.36
  4. Step 4: Simplify right side
    1,287,616,621.12x = 1,298,314,202,557,682,432
  5. Step 5: Solve for x
    x = 1,298,314,202,557,682,432/1,287,616,621.12
  6. Step 6: Final answer
    x = 1,008,308,048.58

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1.5x scale

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.