Home / 629,644.86-869,242.15-505,795.14

Finding the Fourth Proportional to 629,644.86, 869,242.15 and 505,795.14

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Solution

The fourth proportional to 629,644.86, 869,242.15 and 505,795.14 is: 698,264.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,644.86 : 869,242.15 = 505,795.14 : x
  2. Step 2: Convert to fraction form
    629,644.86/869,242.15 = 505,795.14/x
  3. Step 3: Cross multiply
    629,644.86x = 869,242.15 × 505,795.14
  4. Step 4: Simplify right side
    629,644.86x = 439,658,454,953.15
  5. Step 5: Solve for x
    x = 439,658,454,953.15/629,644.86
  6. Step 6: Final answer
    x = 698,264.18

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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.