Home / 685,760.59-1,028,142.66-286,515.53

Finding the Fourth Proportional to 685,760.59, 1,028,142.66 and 286,515.53

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Solution

The fourth proportional to 685,760.59, 1,028,142.66 and 286,515.53 is: 429,565.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,760.59 : 1,028,142.66 = 286,515.53 : x
  2. Step 2: Convert to fraction form
    685,760.59/1,028,142.66 = 286,515.53/x
  3. Step 3: Cross multiply
    685,760.59x = 1,028,142.66 × 286,515.53
  4. Step 4: Simplify right side
    685,760.59x = 294,578,839,145.51
  5. Step 5: Solve for x
    x = 294,578,839,145.51/685,760.59
  6. Step 6: Final answer
    x = 429,565.14

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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.