Home / 1,021,304.80-1,531,957.20-685,381.60

Finding the Fourth Proportional to 1,021,304.80, 1,531,957.20 and 685,381.60

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Solution

The fourth proportional to 1,021,304.80, 1,531,957.20 and 685,381.60 is: 1,028,072.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,304.80 : 1,531,957.20 = 685,381.60 : x
  2. Step 2: Convert to fraction form
    1,021,304.80/1,531,957.20 = 685,381.60/x
  3. Step 3: Cross multiply
    1,021,304.80x = 1,531,957.20 × 685,381.60
  4. Step 4: Simplify right side
    1,021,304.80x = 1,049,975,276,867.52
  5. Step 5: Solve for x
    x = 1,049,975,276,867.52/1,021,304.80
  6. Step 6: Final answer
    x = 1,028,072.40

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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.