Home / 947,886.71-1,308,112.13-518,189.81

Finding the Fourth Proportional to 947,886.71, 1,308,112.13 and 518,189.81

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Solution

The fourth proportional to 947,886.71, 1,308,112.13 and 518,189.81 is: 715,117.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,886.71 : 1,308,112.13 = 518,189.81 : x
  2. Step 2: Convert to fraction form
    947,886.71/1,308,112.13 = 518,189.81/x
  3. Step 3: Cross multiply
    947,886.71x = 1,308,112.13 × 518,189.81
  4. Step 4: Simplify right side
    947,886.71x = 677,850,370,858.31
  5. Step 5: Solve for x
    x = 677,850,370,858.31/947,886.71
  6. Step 6: Final answer
    x = 715,117.50

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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.