Home / 440,284.11-607,396.42-287,287.05

Finding the Fourth Proportional to 440,284.11, 607,396.42 and 287,287.05

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Solution

The fourth proportional to 440,284.11, 607,396.42 and 287,287.05 is: 396,328.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,284.11 : 607,396.42 = 287,287.05 : x
  2. Step 2: Convert to fraction form
    440,284.11/607,396.42 = 287,287.05/x
  3. Step 3: Cross multiply
    440,284.11x = 607,396.42 × 287,287.05
  4. Step 4: Simplify right side
    440,284.11x = 174,497,128,319.21
  5. Step 5: Solve for x
    x = 174,497,128,319.21/440,284.11
  6. Step 6: Final answer
    x = 396,328.47

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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.