Home / 820,262,861.91-1,230,290,509.08-260,030,091.05

Finding the Fourth Proportional to 820,262,861.91, 1,230,290,509.08 and 260,030,091.05

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Solution

The fourth proportional to 820,262,861.91, 1,230,290,509.08 and 260,030,091.05 is: 390,012,236.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,262,861.91 : 1,230,290,509.08 = 260,030,091.05 : x
  2. Step 2: Convert to fraction form
    820,262,861.91/1,230,290,509.08 = 260,030,091.05/x
  3. Step 3: Cross multiply
    820,262,861.91x = 1,230,290,509.08 × 260,030,091.05
  4. Step 4: Simplify right side
    820,262,861.91x = 319,912,553,093,473,536
  5. Step 5: Solve for x
    x = 319,912,553,093,473,536/820,262,861.91
  6. Step 6: Final answer
    x = 390,012,236.26

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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.