Home / 926,221.56-1,278,239.62-518,319.88

Finding the Fourth Proportional to 926,221.56, 1,278,239.62 and 518,319.88

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Solution

The fourth proportional to 926,221.56, 1,278,239.62 and 518,319.88 is: 715,311.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,221.56 : 1,278,239.62 = 518,319.88 : x
  2. Step 2: Convert to fraction form
    926,221.56/1,278,239.62 = 518,319.88/x
  3. Step 3: Cross multiply
    926,221.56x = 1,278,239.62 × 518,319.88
  4. Step 4: Simplify right side
    926,221.56x = 662,537,006,449.65
  5. Step 5: Solve for x
    x = 662,537,006,449.65/926,221.56
  6. Step 6: Final answer
    x = 715,311.58

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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.