Home / 638,396,780.34-880,987,158.95-345,041,348.34

Finding the Fourth Proportional to 638,396,780.34, 880,987,158.95 and 345,041,348.34

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Solution

The fourth proportional to 638,396,780.34, 880,987,158.95 and 345,041,348.34 is: 476,156,845.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,396,780.34 : 880,987,158.95 = 345,041,348.34 : x
  2. Step 2: Convert to fraction form
    638,396,780.34/880,987,158.95 = 345,041,348.34/x
  3. Step 3: Cross multiply
    638,396,780.34x = 880,987,158.95 × 345,041,348.34
  4. Step 4: Simplify right side
    638,396,780.34x = 303,976,997,194,333,888
  5. Step 5: Solve for x
    x = 303,976,997,194,333,888/638,396,780.34
  6. Step 6: Final answer
    x = 476,156,845.64

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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.