Home / 648,620.16-895,245.12-380,434.56

Finding the Fourth Proportional to 648,620.16, 895,245.12 and 380,434.56

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Solution

The fourth proportional to 648,620.16, 895,245.12 and 380,434.56 is: 525,087.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,620.16 : 895,245.12 = 380,434.56 : x
  2. Step 2: Convert to fraction form
    648,620.16/895,245.12 = 380,434.56/x
  3. Step 3: Cross multiply
    648,620.16x = 895,245.12 × 380,434.56
  4. Step 4: Simplify right side
    648,620.16x = 340,582,183,319.35
  5. Step 5: Solve for x
    x = 340,582,183,319.35/648,620.16
  6. Step 6: Final answer
    x = 525,087.26

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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.