Home / 869,115.80-1,304,256.90-395,557.40

Finding the Fourth Proportional to 869,115.80, 1,304,256.90 and 395,557.40

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Solution

The fourth proportional to 869,115.80, 1,304,256.90 and 395,557.40 is: 593,601.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,115.80 : 1,304,256.90 = 395,557.40 : x
  2. Step 2: Convert to fraction form
    869,115.80/1,304,256.90 = 395,557.40/x
  3. Step 3: Cross multiply
    869,115.80x = 1,304,256.90 × 395,557.40
  4. Step 4: Simplify right side
    869,115.80x = 515,908,468,296.06
  5. Step 5: Solve for x
    x = 515,908,468,296.06/869,115.80
  6. Step 6: Final answer
    x = 593,601.53

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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.