Home / 1,214,689,311.20-1,821,657,179.84-438,234,030.72

Finding the Fourth Proportional to 1,214,689,311.20, 1,821,657,179.84 and 438,234,030.72

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Solution

The fourth proportional to 1,214,689,311.20, 1,821,657,179.84 and 438,234,030.72 is: 657,215,109.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,689,311.20 : 1,821,657,179.84 = 438,234,030.72 : x
  2. Step 2: Convert to fraction form
    1,214,689,311.20/1,821,657,179.84 = 438,234,030.72/x
  3. Step 3: Cross multiply
    1,214,689,311.20x = 1,821,657,179.84 × 438,234,030.72
  4. Step 4: Simplify right side
    1,214,689,311.20x = 798,312,168,511,311,104
  5. Step 5: Solve for x
    x = 798,312,168,511,311,104/1,214,689,311.20
  6. Step 6: Final answer
    x = 657,215,109.37

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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.