Home / 905,636.24-1,249,751.68-518,438.60

Finding the Fourth Proportional to 905,636.24, 1,249,751.68 and 518,438.60

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Solution

The fourth proportional to 905,636.24, 1,249,751.68 and 518,438.60 is: 715,430.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,636.24 : 1,249,751.68 = 518,438.60 : x
  2. Step 2: Convert to fraction form
    905,636.24/1,249,751.68 = 518,438.60/x
  3. Step 3: Cross multiply
    905,636.24x = 1,249,751.68 × 518,438.60
  4. Step 4: Simplify right side
    905,636.24x = 647,919,508,468.56
  5. Step 5: Solve for x
    x = 647,919,508,468.56/905,636.24
  6. Step 6: Final answer
    x = 715,430.19

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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.