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Finding the Fourth Proportional to 1,292,566.78, 1,938,836.58 and 333,018.49

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Solution

The fourth proportional to 1,292,566.78, 1,938,836.58 and 333,018.49 is: 499,524.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,566.78 : 1,938,836.58 = 333,018.49 : x
  2. Step 2: Convert to fraction form
    1,292,566.78/1,938,836.58 = 333,018.49/x
  3. Step 3: Cross multiply
    1,292,566.78x = 1,938,836.58 × 333,018.49
  4. Step 4: Simplify right side
    1,292,566.78x = 645,668,430,228.36
  5. Step 5: Solve for x
    x = 645,668,430,228.36/1,292,566.78
  6. Step 6: Final answer
    x = 499,524.23

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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.