Home / 678,412.19-1,017,765.91-205,085.25

Finding the Fourth Proportional to 678,412.19, 1,017,765.91 and 205,085.25

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Solution

The fourth proportional to 678,412.19, 1,017,765.91 and 205,085.25 is: 307,672.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,412.19 : 1,017,765.91 = 205,085.25 : x
  2. Step 2: Convert to fraction form
    678,412.19/1,017,765.91 = 205,085.25/x
  3. Step 3: Cross multiply
    678,412.19x = 1,017,765.91 × 205,085.25
  4. Step 4: Simplify right side
    678,412.19x = 208,728,776,350.18
  5. Step 5: Solve for x
    x = 208,728,776,350.18/678,412.19
  6. Step 6: Final answer
    x = 307,672.50

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Double scale
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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.