Home / 905,613.58-1,249,720.31-518,416.16

Finding the Fourth Proportional to 905,613.58, 1,249,720.31 and 518,416.16

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Solution

The fourth proportional to 905,613.58, 1,249,720.31 and 518,416.16 is: 715,399.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,613.58 : 1,249,720.31 = 518,416.16 : x
  2. Step 2: Convert to fraction form
    905,613.58/1,249,720.31 = 518,416.16/x
  3. Step 3: Cross multiply
    905,613.58x = 1,249,720.31 × 518,416.16
  4. Step 4: Simplify right side
    905,613.58x = 647,875,204,184.21
  5. Step 5: Solve for x
    x = 647,875,204,184.21/905,613.58
  6. Step 6: Final answer
    x = 715,399.17

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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.