Home / 1,290,167.70-1,780,678.20-854,590.20

Finding the Fourth Proportional to 1,290,167.70, 1,780,678.20 and 854,590.20

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Solution

The fourth proportional to 1,290,167.70, 1,780,678.20 and 854,590.20 is: 1,179,497.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,167.70 : 1,780,678.20 = 854,590.20 : x
  2. Step 2: Convert to fraction form
    1,290,167.70/1,780,678.20 = 854,590.20/x
  3. Step 3: Cross multiply
    1,290,167.70x = 1,780,678.20 × 854,590.20
  4. Step 4: Simplify right side
    1,290,167.70x = 1,521,750,139,073.64
  5. Step 5: Solve for x
    x = 1,521,750,139,073.64/1,290,167.70
  6. Step 6: Final answer
    x = 1,179,497.94

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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.