Home / 1,221,779,363.83-1,686,899,056.77-1,143,721,309.75

Finding the Fourth Proportional to 1,221,779,363.83, 1,686,899,056.77 and 1,143,721,309.75

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Solution

The fourth proportional to 1,221,779,363.83, 1,686,899,056.77 and 1,143,721,309.75 is: 1,579,125,049.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,779,363.83 : 1,686,899,056.77 = 1,143,721,309.75 : x
  2. Step 2: Convert to fraction form
    1,221,779,363.83/1,686,899,056.77 = 1,143,721,309.75/x
  3. Step 3: Cross multiply
    1,221,779,363.83x = 1,686,899,056.77 × 1,143,721,309.75
  4. Step 4: Simplify right side
    1,221,779,363.83x = 1,929,342,398,625,024,000
  5. Step 5: Solve for x
    x = 1,929,342,398,625,024,000/1,221,779,363.83
  6. Step 6: Final answer
    x = 1,579,125,049.70

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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.