Home / 391,038,401.30-585,045,947.55-254,989,505.30

Finding the Fourth Proportional to 391,038,401.30, 585,045,947.55 and 254,989,505.30

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Solution

The fourth proportional to 391,038,401.30, 585,045,947.55 and 254,989,505.30 is: 381,498,533.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,038,401.30 : 585,045,947.55 = 254,989,505.30 : x
  2. Step 2: Convert to fraction form
    391,038,401.30/585,045,947.55 = 254,989,505.30/x
  3. Step 3: Cross multiply
    391,038,401.30x = 585,045,947.55 × 254,989,505.30
  4. Step 4: Simplify right side
    391,038,401.30x = 149,180,576,743,544,256
  5. Step 5: Solve for x
    x = 149,180,576,743,544,256/391,038,401.30
  6. Step 6: Final answer
    x = 381,498,533.77

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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.