Home / 686,538.20-1,029,807.30-658,544.60

Finding the Fourth Proportional to 686,538.20, 1,029,807.30 and 658,544.60

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Solution

The fourth proportional to 686,538.20, 1,029,807.30 and 658,544.60 is: 987,816.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,538.20 : 1,029,807.30 = 658,544.60 : x
  2. Step 2: Convert to fraction form
    686,538.20/1,029,807.30 = 658,544.60/x
  3. Step 3: Cross multiply
    686,538.20x = 1,029,807.30 × 658,544.60
  4. Step 4: Simplify right side
    686,538.20x = 678,174,036,455.58
  5. Step 5: Solve for x
    x = 678,174,036,455.58/686,538.20
  6. Step 6: Final answer
    x = 987,816.90

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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.