Home / 919,118.80-1,379,801.40-520,037.20

Finding the Fourth Proportional to 919,118.80, 1,379,801.40 and 520,037.20

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Solution

The fourth proportional to 919,118.80, 1,379,801.40 and 520,037.20 is: 780,691.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,118.80 : 1,379,801.40 = 520,037.20 : x
  2. Step 2: Convert to fraction form
    919,118.80/1,379,801.40 = 520,037.20/x
  3. Step 3: Cross multiply
    919,118.80x = 1,379,801.40 × 520,037.20
  4. Step 4: Simplify right side
    919,118.80x = 717,548,056,612.08
  5. Step 5: Solve for x
    x = 717,548,056,612.08/919,118.80
  6. Step 6: Final answer
    x = 780,691.31

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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.