Home / 1,439,011.20-1,985,803.88-785,614.88

Finding the Fourth Proportional to 1,439,011.20, 1,985,803.88 and 785,614.88

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Solution

The fourth proportional to 1,439,011.20, 1,985,803.88 and 785,614.88 is: 1,084,131.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439,011.20 : 1,985,803.88 = 785,614.88 : x
  2. Step 2: Convert to fraction form
    1,439,011.20/1,985,803.88 = 785,614.88/x
  3. Step 3: Cross multiply
    1,439,011.20x = 1,985,803.88 × 785,614.88
  4. Step 4: Simplify right side
    1,439,011.20x = 1,560,077,076,889.73
  5. Step 5: Solve for x
    x = 1,560,077,076,889.73/1,439,011.20
  6. Step 6: Final answer
    x = 1,084,131.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.