Home / 778,867.80-1,167,840.90-405,619.80

Finding the Fourth Proportional to 778,867.80, 1,167,840.90 and 405,619.80

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Solution

The fourth proportional to 778,867.80, 1,167,840.90 and 405,619.80 is: 608,189.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,867.80 : 1,167,840.90 = 405,619.80 : x
  2. Step 2: Convert to fraction form
    778,867.80/1,167,840.90 = 405,619.80/x
  3. Step 3: Cross multiply
    778,867.80x = 1,167,840.90 × 405,619.80
  4. Step 4: Simplify right side
    778,867.80x = 473,699,392,289.82
  5. Step 5: Solve for x
    x = 473,699,392,289.82/778,867.80
  6. Step 6: Final answer
    x = 608,189.72

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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.