Home / 685,407.51-1,028,357.28-306,296.55

Finding the Fourth Proportional to 685,407.51, 1,028,357.28 and 306,296.55

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Solution

The fourth proportional to 685,407.51, 1,028,357.28 and 306,296.55 is: 459,554.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,407.51 : 1,028,357.28 = 306,296.55 : x
  2. Step 2: Convert to fraction form
    685,407.51/1,028,357.28 = 306,296.55/x
  3. Step 3: Cross multiply
    685,407.51x = 1,028,357.28 × 306,296.55
  4. Step 4: Simplify right side
    685,407.51x = 314,982,287,031.38
  5. Step 5: Solve for x
    x = 314,982,287,031.38/685,407.51
  6. Step 6: Final answer
    x = 459,554.76

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1.5x scale

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.