Home / 905,176.51-1,249,394.99-518,208.73

Finding the Fourth Proportional to 905,176.51, 1,249,394.99 and 518,208.73

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Solution

The fourth proportional to 905,176.51, 1,249,394.99 and 518,208.73 is: 715,271.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,176.51 : 1,249,394.99 = 518,208.73 : x
  2. Step 2: Convert to fraction form
    905,176.51/1,249,394.99 = 518,208.73/x
  3. Step 3: Cross multiply
    905,176.51x = 1,249,394.99 × 518,208.73
  4. Step 4: Simplify right side
    905,176.51x = 647,447,391,036.26
  5. Step 5: Solve for x
    x = 647,447,391,036.26/905,176.51
  6. Step 6: Final answer
    x = 715,271.98

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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.