Home / 1,098,929.80-1,648,394.70-780,065.20

Finding the Fourth Proportional to 1,098,929.80, 1,648,394.70 and 780,065.20

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Solution

The fourth proportional to 1,098,929.80, 1,648,394.70 and 780,065.20 is: 1,170,097.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,929.80 : 1,648,394.70 = 780,065.20 : x
  2. Step 2: Convert to fraction form
    1,098,929.80/1,648,394.70 = 780,065.20/x
  3. Step 3: Cross multiply
    1,098,929.80x = 1,648,394.70 × 780,065.20
  4. Step 4: Simplify right side
    1,098,929.80x = 1,285,855,341,334.44
  5. Step 5: Solve for x
    x = 1,285,855,341,334.44/1,098,929.80
  6. Step 6: Final answer
    x = 1,170,097.80

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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.