Home / 678,426.60-1,017,639.90-205,062.60

Finding the Fourth Proportional to 678,426.60, 1,017,639.90 and 205,062.60

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Solution

The fourth proportional to 678,426.60, 1,017,639.90 and 205,062.60 is: 307,593.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,426.60 : 1,017,639.90 = 205,062.60 : x
  2. Step 2: Convert to fraction form
    678,426.60/1,017,639.90 = 205,062.60/x
  3. Step 3: Cross multiply
    678,426.60x = 1,017,639.90 × 205,062.60
  4. Step 4: Simplify right side
    678,426.60x = 208,679,883,757.74
  5. Step 5: Solve for x
    x = 208,679,883,757.74/678,426.60
  6. Step 6: Final answer
    x = 307,593.90

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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.