Home / 678,528.40-1,017,485.40-257,664.40

Finding the Fourth Proportional to 678,528.40, 1,017,485.40 and 257,664.40

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Solution

The fourth proportional to 678,528.40, 1,017,485.40 and 257,664.40 is: 386,379.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,528.40 : 1,017,485.40 = 257,664.40 : x
  2. Step 2: Convert to fraction form
    678,528.40/1,017,485.40 = 257,664.40/x
  3. Step 3: Cross multiply
    678,528.40x = 1,017,485.40 × 257,664.40
  4. Step 4: Simplify right side
    678,528.40x = 262,169,765,099.76
  5. Step 5: Solve for x
    x = 262,169,765,099.76/678,528.40
  6. Step 6: Final answer
    x = 386,379.94

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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.