Home / 638,012,708.20-880,435,770.90-351,915,572

Finding the Fourth Proportional to 638,012,708.20, 880,435,770.90 and 351,915,572

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Solution

The fourth proportional to 638,012,708.20, 880,435,770.90 and 351,915,572 is: 485,631,483.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,012,708.20 : 880,435,770.90 = 351,915,572 : x
  2. Step 2: Convert to fraction form
    638,012,708.20/880,435,770.90 = 351,915,572/x
  3. Step 3: Cross multiply
    638,012,708.20x = 880,435,770.90 × 351,915,572
  4. Step 4: Simplify right side
    638,012,708.20x = 309,839,057,925,534,464
  5. Step 5: Solve for x
    x = 309,839,057,925,534,464/638,012,708.20
  6. Step 6: Final answer
    x = 485,631,483.42

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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.