Home / 856,498.98-1,283,346.90-518,515.21

Finding the Fourth Proportional to 856,498.98, 1,283,346.90 and 518,515.21

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Solution

The fourth proportional to 856,498.98, 1,283,346.90 and 518,515.21 is: 776,924.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,498.98 : 1,283,346.90 = 518,515.21 : x
  2. Step 2: Convert to fraction form
    856,498.98/1,283,346.90 = 518,515.21/x
  3. Step 3: Cross multiply
    856,498.98x = 1,283,346.90 × 518,515.21
  4. Step 4: Simplify right side
    856,498.98x = 665,434,884,147.98
  5. Step 5: Solve for x
    x = 665,434,884,147.98/856,498.98
  6. Step 6: Final answer
    x = 776,924.32

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Double scale
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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.