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Finding the Fourth Proportional to 629,792.06, 869,080.20 and 357,822.20

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Solution

The fourth proportional to 629,792.06, 869,080.20 and 357,822.20 is: 493,775.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,792.06 : 869,080.20 = 357,822.20 : x
  2. Step 2: Convert to fraction form
    629,792.06/869,080.20 = 357,822.20/x
  3. Step 3: Cross multiply
    629,792.06x = 869,080.20 × 357,822.20
  4. Step 4: Simplify right side
    629,792.06x = 310,976,189,140.44
  5. Step 5: Solve for x
    x = 310,976,189,140.44/629,792.06
  6. Step 6: Final answer
    x = 493,775.98

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1.5x scale

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.