Home / 280,600,854,672.15-420,901,282,008.22-81,854,143,815.15

Finding the Fourth Proportional to 280,600,854,672.15, 420,901,282,008.22 and 81,854,143,815.15

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Solution

The fourth proportional to 280,600,854,672.15, 420,901,282,008.22 and 81,854,143,815.15 is: 122,781,215,722.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,600,854,672.15 : 420,901,282,008.22 = 81,854,143,815.15 : x
  2. Step 2: Convert to fraction form
    280,600,854,672.15/420,901,282,008.22 = 81,854,143,815.15/x
  3. Step 3: Cross multiply
    280,600,854,672.15x = 420,901,282,008.22 × 81,854,143,815.15
  4. Step 4: Simplify right side
    280,600,854,672.15x = 34,452,514,069,481,844,113,408
  5. Step 5: Solve for x
    x = 34,452,514,069,481,844,113,408/280,600,854,672.15
  6. Step 6: Final answer
    x = 122,781,215,722.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.