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Finding the Fourth Proportional to 1,668,662.70, 2,502,994.05 and 1,556,688.30

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Solution

The fourth proportional to 1,668,662.70, 2,502,994.05 and 1,556,688.30 is: 2,335,032.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,668,662.70 : 2,502,994.05 = 1,556,688.30 : x
  2. Step 2: Convert to fraction form
    1,668,662.70/2,502,994.05 = 1,556,688.30/x
  3. Step 3: Cross multiply
    1,668,662.70x = 2,502,994.05 × 1,556,688.30
  4. Step 4: Simplify right side
    1,668,662.70x = 3,896,381,552,604.62
  5. Step 5: Solve for x
    x = 3,896,381,552,604.62/1,668,662.70
  6. Step 6: Final answer
    x = 2,335,032.45

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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.