Home / 856,499.21-1,283,347.25-518,515.45

Finding the Fourth Proportional to 856,499.21, 1,283,347.25 and 518,515.45

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Solution

The fourth proportional to 856,499.21, 1,283,347.25 and 518,515.45 is: 776,924.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,499.21 : 1,283,347.25 = 518,515.45 : x
  2. Step 2: Convert to fraction form
    856,499.21/1,283,347.25 = 518,515.45/x
  3. Step 3: Cross multiply
    856,499.21x = 1,283,347.25 × 518,515.45
  4. Step 4: Simplify right side
    856,499.21x = 665,435,378,051.24
  5. Step 5: Solve for x
    x = 665,435,378,051.24/856,499.21
  6. Step 6: Final answer
    x = 776,924.68

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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.