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Finding the Fourth Proportional to 1,015,811.73, 1,401,836.02 and 556,968.20

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Solution

The fourth proportional to 1,015,811.73, 1,401,836.02 and 556,968.20 is: 768,624.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015,811.73 : 1,401,836.02 = 556,968.20 : x
  2. Step 2: Convert to fraction form
    1,015,811.73/1,401,836.02 = 556,968.20/x
  3. Step 3: Cross multiply
    1,015,811.73x = 1,401,836.02 × 556,968.20
  4. Step 4: Simplify right side
    1,015,811.73x = 780,778,076,352.96
  5. Step 5: Solve for x
    x = 780,778,076,352.96/1,015,811.73
  6. Step 6: Final answer
    x = 768,624.79

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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.