Home / 705,719.21-973,860.77-399,789.34

Finding the Fourth Proportional to 705,719.21, 973,860.77 and 399,789.34

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Solution

The fourth proportional to 705,719.21, 973,860.77 and 399,789.34 is: 551,691.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,719.21 : 973,860.77 = 399,789.34 : x
  2. Step 2: Convert to fraction form
    705,719.21/973,860.77 = 399,789.34/x
  3. Step 3: Cross multiply
    705,719.21x = 973,860.77 × 399,789.34
  4. Step 4: Simplify right side
    705,719.21x = 389,339,153,055.01
  5. Step 5: Solve for x
    x = 389,339,153,055.01/705,719.21
  6. Step 6: Final answer
    x = 551,691.31

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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.