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Finding the Fourth Proportional to 545,607.60, 818,411.40 and 419,490.60

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Solution

The fourth proportional to 545,607.60, 818,411.40 and 419,490.60 is: 629,235.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,607.60 : 818,411.40 = 419,490.60 : x
  2. Step 2: Convert to fraction form
    545,607.60/818,411.40 = 419,490.60/x
  3. Step 3: Cross multiply
    545,607.60x = 818,411.40 × 419,490.60
  4. Step 4: Simplify right side
    545,607.60x = 343,315,889,232.84
  5. Step 5: Solve for x
    x = 343,315,889,232.84/545,607.60
  6. Step 6: Final answer
    x = 629,235.90

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1.5x scale

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.