Home / 830,018.40-1,245,027.60-409,239.60

Finding the Fourth Proportional to 830,018.40, 1,245,027.60 and 409,239.60

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Solution

The fourth proportional to 830,018.40, 1,245,027.60 and 409,239.60 is: 613,859.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,018.40 : 1,245,027.60 = 409,239.60 : x
  2. Step 2: Convert to fraction form
    830,018.40/1,245,027.60 = 409,239.60/x
  3. Step 3: Cross multiply
    830,018.40x = 1,245,027.60 × 409,239.60
  4. Step 4: Simplify right side
    830,018.40x = 509,514,597,012.96
  5. Step 5: Solve for x
    x = 509,514,597,012.96/830,018.40
  6. Step 6: Final answer
    x = 613,859.40

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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.