Home / 869,128.80-1,303,304.40-395,570.40

Finding the Fourth Proportional to 869,128.80, 1,303,304.40 and 395,570.40

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Solution

The fourth proportional to 869,128.80, 1,303,304.40 and 395,570.40 is: 593,178.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,128.80 : 1,303,304.40 = 395,570.40 : x
  2. Step 2: Convert to fraction form
    869,128.80/1,303,304.40 = 395,570.40/x
  3. Step 3: Cross multiply
    869,128.80x = 1,303,304.40 × 395,570.40
  4. Step 4: Simplify right side
    869,128.80x = 515,548,642,829.76
  5. Step 5: Solve for x
    x = 515,548,642,829.76/869,128.80
  6. Step 6: Final answer
    x = 593,178.64

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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.