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Finding the Fourth Proportional to 620,573.15, 856,460.45 and 375,692.88

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Solution

The fourth proportional to 620,573.15, 856,460.45 and 375,692.88 is: 518,498.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,573.15 : 856,460.45 = 375,692.88 : x
  2. Step 2: Convert to fraction form
    620,573.15/856,460.45 = 375,692.88/x
  3. Step 3: Cross multiply
    620,573.15x = 856,460.45 × 375,692.88
  4. Step 4: Simplify right side
    620,573.15x = 321,766,093,604.36
  5. Step 5: Solve for x
    x = 321,766,093,604.36/620,573.15
  6. Step 6: Final answer
    x = 518,498.25

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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.