Home / 678,308.40-1,017,608.40-205,041.60

Finding the Fourth Proportional to 678,308.40, 1,017,608.40 and 205,041.60

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Solution

The fourth proportional to 678,308.40, 1,017,608.40 and 205,041.60 is: 307,606.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,308.40 : 1,017,608.40 = 205,041.60 : x
  2. Step 2: Convert to fraction form
    678,308.40/1,017,608.40 = 205,041.60/x
  3. Step 3: Cross multiply
    678,308.40x = 1,017,608.40 × 205,041.60
  4. Step 4: Simplify right side
    678,308.40x = 208,652,054,509.44
  5. Step 5: Solve for x
    x = 208,652,054,509.44/678,308.40
  6. Step 6: Final answer
    x = 307,606.47

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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.