Home / 873,495.32-1,205,111.55-505,771.75

Finding the Fourth Proportional to 873,495.32, 1,205,111.55 and 505,771.75

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Solution

The fourth proportional to 873,495.32, 1,205,111.55 and 505,771.75 is: 697,784.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,495.32 : 1,205,111.55 = 505,771.75 : x
  2. Step 2: Convert to fraction form
    873,495.32/1,205,111.55 = 505,771.75/x
  3. Step 3: Cross multiply
    873,495.32x = 1,205,111.55 × 505,771.75
  4. Step 4: Simplify right side
    873,495.32x = 609,511,373,146.12
  5. Step 5: Solve for x
    x = 609,511,373,146.12/873,495.32
  6. Step 6: Final answer
    x = 697,784.36

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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.