Home / 878,154.51-1,211,760.50-496,107.51

Finding the Fourth Proportional to 878,154.51, 1,211,760.50 and 496,107.51

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Solution

The fourth proportional to 878,154.51, 1,211,760.50 and 496,107.51 is: 684,575.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,154.51 : 1,211,760.50 = 496,107.51 : x
  2. Step 2: Convert to fraction form
    878,154.51/1,211,760.50 = 496,107.51/x
  3. Step 3: Cross multiply
    878,154.51x = 1,211,760.50 × 496,107.51
  4. Step 4: Simplify right side
    878,154.51x = 601,163,481,890.82
  5. Step 5: Solve for x
    x = 601,163,481,890.82/878,154.51
  6. Step 6: Final answer
    x = 684,575.98

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Double scale
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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.