Home / 285,829.63-428,740.29-69,689.23

Finding the Fourth Proportional to 285,829.63, 428,740.29 and 69,689.23

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Solution

The fourth proportional to 285,829.63, 428,740.29 and 69,689.23 is: 104,532.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,829.63 : 428,740.29 = 69,689.23 : x
  2. Step 2: Convert to fraction form
    285,829.63/428,740.29 = 69,689.23/x
  3. Step 3: Cross multiply
    285,829.63x = 428,740.29 × 69,689.23
  4. Step 4: Simplify right side
    285,829.63x = 29,878,579,608.23
  5. Step 5: Solve for x
    x = 29,878,579,608.23/285,829.63
  6. Step 6: Final answer
    x = 104,532.83

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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.