Home / 638,595,619.20-957,893,428.80-275,798,563.20

Finding the Fourth Proportional to 638,595,619.20, 957,893,428.80 and 275,798,563.20

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Solution

The fourth proportional to 638,595,619.20, 957,893,428.80 and 275,798,563.20 is: 413,697,844.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,595,619.20 : 957,893,428.80 = 275,798,563.20 : x
  2. Step 2: Convert to fraction form
    638,595,619.20/957,893,428.80 = 275,798,563.20/x
  3. Step 3: Cross multiply
    638,595,619.20x = 957,893,428.80 × 275,798,563.20
  4. Step 4: Simplify right side
    638,595,619.20x = 264,185,631,361,761,472
  5. Step 5: Solve for x
    x = 264,185,631,361,761,472/638,595,619.20
  6. Step 6: Final answer
    x = 413,697,844.80

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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.