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Finding the Fourth Proportional to 768,618.19, 1,152,010.03 and 357,734.60

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Solution

The fourth proportional to 768,618.19, 1,152,010.03 and 357,734.60 is: 536,174.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,618.19 : 1,152,010.03 = 357,734.60 : x
  2. Step 2: Convert to fraction form
    768,618.19/1,152,010.03 = 357,734.60/x
  3. Step 3: Cross multiply
    768,618.19x = 1,152,010.03 × 357,734.60
  4. Step 4: Simplify right side
    768,618.19x = 412,113,843,503.68
  5. Step 5: Solve for x
    x = 412,113,843,503.68/768,618.19
  6. Step 6: Final answer
    x = 536,174.98

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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.