Home / 911,156.60-1,366,734.90-405,716.60

Finding the Fourth Proportional to 911,156.60, 1,366,734.90 and 405,716.60

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Solution

The fourth proportional to 911,156.60, 1,366,734.90 and 405,716.60 is: 608,574.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,156.60 : 1,366,734.90 = 405,716.60 : x
  2. Step 2: Convert to fraction form
    911,156.60/1,366,734.90 = 405,716.60/x
  3. Step 3: Cross multiply
    911,156.60x = 1,366,734.90 × 405,716.60
  4. Step 4: Simplify right side
    911,156.60x = 554,507,036,729.34
  5. Step 5: Solve for x
    x = 554,507,036,729.34/911,156.60
  6. Step 6: Final answer
    x = 608,574.90

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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.