Home / 1,389,304.80-1,917,617.76-816,528.96

Finding the Fourth Proportional to 1,389,304.80, 1,917,617.76 and 816,528.96

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Solution

The fourth proportional to 1,389,304.80, 1,917,617.76 and 816,528.96 is: 1,127,031.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,304.80 : 1,917,617.76 = 816,528.96 : x
  2. Step 2: Convert to fraction form
    1,389,304.80/1,917,617.76 = 816,528.96/x
  3. Step 3: Cross multiply
    1,389,304.80x = 1,917,617.76 × 816,528.96
  4. Step 4: Simplify right side
    1,389,304.80x = 1,565,790,435,250.33
  5. Step 5: Solve for x
    x = 1,565,790,435,250.33/1,389,304.80
  6. Step 6: Final answer
    x = 1,127,031.62

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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.