Home / 1,221,779,390.40-1,686,899,093.49-1,143,721,336.32

Finding the Fourth Proportional to 1,221,779,390.40, 1,686,899,093.49 and 1,143,721,336.32

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Solution

The fourth proportional to 1,221,779,390.40, 1,686,899,093.49 and 1,143,721,336.32 is: 1,579,125,086.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,779,390.40 : 1,686,899,093.49 = 1,143,721,336.32 : x
  2. Step 2: Convert to fraction form
    1,221,779,390.40/1,686,899,093.49 = 1,143,721,336.32/x
  3. Step 3: Cross multiply
    1,221,779,390.40x = 1,686,899,093.49 × 1,143,721,336.32
  4. Step 4: Simplify right side
    1,221,779,390.40x = 1,929,342,485,443,379,200
  5. Step 5: Solve for x
    x = 1,929,342,485,443,379,200/1,221,779,390.40
  6. Step 6: Final answer
    x = 1,579,125,086.41

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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.