Home / 1,265,415.45-1,898,123.18-412,485.45

Finding the Fourth Proportional to 1,265,415.45, 1,898,123.18 and 412,485.45

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Solution

The fourth proportional to 1,265,415.45, 1,898,123.18 and 412,485.45 is: 618,728.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265,415.45 : 1,898,123.18 = 412,485.45 : x
  2. Step 2: Convert to fraction form
    1,265,415.45/1,898,123.18 = 412,485.45/x
  3. Step 3: Cross multiply
    1,265,415.45x = 1,898,123.18 × 412,485.45
  4. Step 4: Simplify right side
    1,265,415.45x = 782,948,191,995.30
  5. Step 5: Solve for x
    x = 782,948,191,995.30/1,265,415.45
  6. Step 6: Final answer
    x = 618,728.18

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Double scale
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Similar ratio
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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.