Home / 881,686.80-1,216,739.88-479,287.44

Finding the Fourth Proportional to 881,686.80, 1,216,739.88 and 479,287.44

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Solution

The fourth proportional to 881,686.80, 1,216,739.88 and 479,287.44 is: 661,423.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,686.80 : 1,216,739.88 = 479,287.44 : x
  2. Step 2: Convert to fraction form
    881,686.80/1,216,739.88 = 479,287.44/x
  3. Step 3: Cross multiply
    881,686.80x = 1,216,739.88 × 479,287.44
  4. Step 4: Simplify right side
    881,686.80x = 583,168,142,231.11
  5. Step 5: Solve for x
    x = 583,168,142,231.11/881,686.80
  6. Step 6: Final answer
    x = 661,423.24

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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.