Home / 828,918.40-1,243,326.84-487,550.61

Finding the Fourth Proportional to 828,918.40, 1,243,326.84 and 487,550.61

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Solution

The fourth proportional to 828,918.40, 1,243,326.84 and 487,550.61 is: 731,296.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,918.40 : 1,243,326.84 = 487,550.61 : x
  2. Step 2: Convert to fraction form
    828,918.40/1,243,326.84 = 487,550.61/x
  3. Step 3: Cross multiply
    828,918.40x = 1,243,326.84 × 487,550.61
  4. Step 4: Simplify right side
    828,918.40x = 606,184,759,271.37
  5. Step 5: Solve for x
    x = 606,184,759,271.37/828,918.40
  6. Step 6: Final answer
    x = 731,296.06

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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.