Home / 1,221,779,362.83-1,686,899,055.39-1,143,721,308.75

Finding the Fourth Proportional to 1,221,779,362.83, 1,686,899,055.39 and 1,143,721,308.75

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Solution

The fourth proportional to 1,221,779,362.83, 1,686,899,055.39 and 1,143,721,308.75 is: 1,579,125,048.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,779,362.83 : 1,686,899,055.39 = 1,143,721,308.75 : x
  2. Step 2: Convert to fraction form
    1,221,779,362.83/1,686,899,055.39 = 1,143,721,308.75/x
  3. Step 3: Cross multiply
    1,221,779,362.83x = 1,686,899,055.39 × 1,143,721,308.75
  4. Step 4: Simplify right side
    1,221,779,362.83x = 1,929,342,395,359,789,568
  5. Step 5: Solve for x
    x = 1,929,342,395,359,789,568/1,221,779,362.83
  6. Step 6: Final answer
    x = 1,579,125,048.32

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Double scale
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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.