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Finding the Fourth Proportional to 978,504.10, 1,467,756.15 and 711,700.90

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Solution

The fourth proportional to 978,504.10, 1,467,756.15 and 711,700.90 is: 1,067,551.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,504.10 : 1,467,756.15 = 711,700.90 : x
  2. Step 2: Convert to fraction form
    978,504.10/1,467,756.15 = 711,700.90/x
  3. Step 3: Cross multiply
    978,504.10x = 1,467,756.15 × 711,700.90
  4. Step 4: Simplify right side
    978,504.10x = 1,044,603,372,935.53
  5. Step 5: Solve for x
    x = 1,044,603,372,935.53/978,504.10
  6. Step 6: Final answer
    x = 1,067,551.35

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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.