Home / 1,287,616,633.12-1,776,809,644.82-730,699,678.36

Finding the Fourth Proportional to 1,287,616,633.12, 1,776,809,644.82 and 730,699,678.36

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Solution

The fourth proportional to 1,287,616,633.12, 1,776,809,644.82 and 730,699,678.36 is: 1,008,308,065.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,616,633.12 : 1,776,809,644.82 = 730,699,678.36 : x
  2. Step 2: Convert to fraction form
    1,287,616,633.12/1,776,809,644.82 = 730,699,678.36/x
  3. Step 3: Cross multiply
    1,287,616,633.12x = 1,776,809,644.82 × 730,699,678.36
  4. Step 4: Simplify right side
    1,287,616,633.12x = 1,298,314,235,976,919,808
  5. Step 5: Solve for x
    x = 1,298,314,235,976,919,808/1,287,616,633.12
  6. Step 6: Final answer
    x = 1,008,308,065.14

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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.