Home / 1,098,970.80-1,648,456.20-780,106.20

Finding the Fourth Proportional to 1,098,970.80, 1,648,456.20 and 780,106.20

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Solution

The fourth proportional to 1,098,970.80, 1,648,456.20 and 780,106.20 is: 1,170,159.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,970.80 : 1,648,456.20 = 780,106.20 : x
  2. Step 2: Convert to fraction form
    1,098,970.80/1,648,456.20 = 780,106.20/x
  3. Step 3: Cross multiply
    1,098,970.80x = 1,648,456.20 × 780,106.20
  4. Step 4: Simplify right side
    1,098,970.80x = 1,285,970,902,048.44
  5. Step 5: Solve for x
    x = 1,285,970,902,048.44/1,098,970.80
  6. Step 6: Final answer
    x = 1,170,159.30

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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.