Home / 742,842.77-1,021,176.27-639,095.60

Finding the Fourth Proportional to 742,842.77, 1,021,176.27 and 639,095.60

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Solution

The fourth proportional to 742,842.77, 1,021,176.27 and 639,095.60 is: 878,556.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,842.77 : 1,021,176.27 = 639,095.60 : x
  2. Step 2: Convert to fraction form
    742,842.77/1,021,176.27 = 639,095.60/x
  3. Step 3: Cross multiply
    742,842.77x = 1,021,176.27 × 639,095.60
  4. Step 4: Simplify right side
    742,842.77x = 652,629,263,534.35
  5. Step 5: Solve for x
    x = 652,629,263,534.35/742,842.77
  6. Step 6: Final answer
    x = 878,556.40

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.