Home / 1,370,009.80-1,890,610.86-766,397.80

Finding the Fourth Proportional to 1,370,009.80, 1,890,610.86 and 766,397.80

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Solution

The fourth proportional to 1,370,009.80, 1,890,610.86 and 766,397.80 is: 1,057,627.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370,009.80 : 1,890,610.86 = 766,397.80 : x
  2. Step 2: Convert to fraction form
    1,370,009.80/1,890,610.86 = 766,397.80/x
  3. Step 3: Cross multiply
    1,370,009.80x = 1,890,610.86 × 766,397.80
  4. Step 4: Simplify right side
    1,370,009.80x = 1,448,960,003,760.11
  5. Step 5: Solve for x
    x = 1,448,960,003,760.11/1,370,009.80
  6. Step 6: Final answer
    x = 1,057,627.47

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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.