Home / 839,910.30-1,259,865.45-307,254.30

Finding the Fourth Proportional to 839,910.30, 1,259,865.45 and 307,254.30

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Solution

The fourth proportional to 839,910.30, 1,259,865.45 and 307,254.30 is: 460,881.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,910.30 : 1,259,865.45 = 307,254.30 : x
  2. Step 2: Convert to fraction form
    839,910.30/1,259,865.45 = 307,254.30/x
  3. Step 3: Cross multiply
    839,910.30x = 1,259,865.45 × 307,254.30
  4. Step 4: Simplify right side
    839,910.30x = 387,099,076,933.94
  5. Step 5: Solve for x
    x = 387,099,076,933.94/839,910.30
  6. Step 6: Final answer
    x = 460,881.45

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Half scale
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Double scale
Find fourth proportional to 839,911.30, 1,259,866.95 and 307,255.30
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.