Home / 1,090,721,828.40-1,505,233,263-645,067,215.60

Finding the Fourth Proportional to 1,090,721,828.40, 1,505,233,263 and 645,067,215.60

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Solution

The fourth proportional to 1,090,721,828.40, 1,505,233,263 and 645,067,215.60 is: 890,214,722.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090,721,828.40 : 1,505,233,263 = 645,067,215.60 : x
  2. Step 2: Convert to fraction form
    1,090,721,828.40/1,505,233,263 = 645,067,215.60/x
  3. Step 3: Cross multiply
    1,090,721,828.40x = 1,505,233,263 × 645,067,215.60
  4. Step 4: Simplify right side
    1,090,721,828.40x = 970,976,629,791,912,576
  5. Step 5: Solve for x
    x = 970,976,629,791,912,576/1,090,721,828.40
  6. Step 6: Final answer
    x = 890,214,722.50

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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.