Home / 905,175.51-1,249,393.61-518,207.73

Finding the Fourth Proportional to 905,175.51, 1,249,393.61 and 518,207.73

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Solution

The fourth proportional to 905,175.51, 1,249,393.61 and 518,207.73 is: 715,270.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,175.51 : 1,249,393.61 = 518,207.73 : x
  2. Step 2: Convert to fraction form
    905,175.51/1,249,393.61 = 518,207.73/x
  3. Step 3: Cross multiply
    905,175.51x = 1,249,393.61 × 518,207.73
  4. Step 4: Simplify right side
    905,175.51x = 647,445,423,124.90
  5. Step 5: Solve for x
    x = 647,445,423,124.90/905,175.51
  6. Step 6: Final answer
    x = 715,270.60

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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.