Home / 685,836.90-1,030,336.46-657,493.86

Finding the Fourth Proportional to 685,836.90, 1,030,336.46 and 657,493.86

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Solution

The fourth proportional to 685,836.90, 1,030,336.46 and 657,493.86 is: 987,756.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,836.90 : 1,030,336.46 = 657,493.86 : x
  2. Step 2: Convert to fraction form
    685,836.90/1,030,336.46 = 657,493.86/x
  3. Step 3: Cross multiply
    685,836.90x = 1,030,336.46 × 657,493.86
  4. Step 4: Simplify right side
    685,836.90x = 677,439,896,184.14
  5. Step 5: Solve for x
    x = 677,439,896,184.14/685,836.90
  6. Step 6: Final answer
    x = 987,756.56

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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.