Home / 685,703.16-1,028,356.08-205,911.60

Finding the Fourth Proportional to 685,703.16, 1,028,356.08 and 205,911.60

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Solution

The fourth proportional to 685,703.16, 1,028,356.08 and 205,911.60 is: 308,807.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,703.16 : 1,028,356.08 = 205,911.60 : x
  2. Step 2: Convert to fraction form
    685,703.16/1,028,356.08 = 205,911.60/x
  3. Step 3: Cross multiply
    685,703.16x = 1,028,356.08 × 205,911.60
  4. Step 4: Simplify right side
    685,703.16x = 211,750,445,802.53
  5. Step 5: Solve for x
    x = 211,750,445,802.53/685,703.16
  6. Step 6: Final answer
    x = 308,807.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.