Home / 1,705,235.21-2,352,665.72-1,215,281.90

Finding the Fourth Proportional to 1,705,235.21, 2,352,665.72 and 1,215,281.90

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Solution

The fourth proportional to 1,705,235.21, 2,352,665.72 and 1,215,281.90 is: 1,676,690.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,705,235.21 : 2,352,665.72 = 1,215,281.90 : x
  2. Step 2: Convert to fraction form
    1,705,235.21/2,352,665.72 = 1,215,281.90/x
  3. Step 3: Cross multiply
    1,705,235.21x = 2,352,665.72 × 1,215,281.90
  4. Step 4: Simplify right side
    1,705,235.21x = 2,859,152,066,266.47
  5. Step 5: Solve for x
    x = 2,859,152,066,266.47/1,705,235.21
  6. Step 6: Final answer
    x = 1,676,690.73

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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.