Home / 905,327.88-1,249,385.27-518,214.30

Finding the Fourth Proportional to 905,327.88, 1,249,385.27 and 518,214.30

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Solution

The fourth proportional to 905,327.88, 1,249,385.27 and 518,214.30 is: 715,154.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,327.88 : 1,249,385.27 = 518,214.30 : x
  2. Step 2: Convert to fraction form
    905,327.88/1,249,385.27 = 518,214.30/x
  3. Step 3: Cross multiply
    905,327.88x = 1,249,385.27 × 518,214.30
  4. Step 4: Simplify right side
    905,327.88x = 647,449,313,123.36
  5. Step 5: Solve for x
    x = 647,449,313,123.36/905,327.88
  6. Step 6: Final answer
    x = 715,154.51

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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.