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Finding the Fourth Proportional to 978,254.10, 1,465,631.55 and 603,839.70

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Solution

The fourth proportional to 978,254.10, 1,465,631.55 and 603,839.70 is: 904,679.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,254.10 : 1,465,631.55 = 603,839.70 : x
  2. Step 2: Convert to fraction form
    978,254.10/1,465,631.55 = 603,839.70/x
  3. Step 3: Cross multiply
    978,254.10x = 1,465,631.55 × 603,839.70
  4. Step 4: Simplify right side
    978,254.10x = 885,006,515,462.54
  5. Step 5: Solve for x
    x = 885,006,515,462.54/978,254.10
  6. Step 6: Final answer
    x = 904,679.59

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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.