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Finding the Fourth Proportional to 3,930,677.40, 5,894,009.54 and 1,798,933.78

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Solution

The fourth proportional to 3,930,677.40, 5,894,009.54 and 1,798,933.78 is: 2,697,482.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930,677.40 : 5,894,009.54 = 1,798,933.78 : x
  2. Step 2: Convert to fraction form
    3,930,677.40/5,894,009.54 = 1,798,933.78/x
  3. Step 3: Cross multiply
    3,930,677.40x = 5,894,009.54 × 1,798,933.78
  4. Step 4: Simplify right side
    3,930,677.40x = 10,602,932,852,153.59
  5. Step 5: Solve for x
    x = 10,602,932,852,153.59/3,930,677.40
  6. Step 6: Final answer
    x = 2,697,482.34

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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.