Home / 720,980.41-1,082,120.64-384,301.48

Finding the Fourth Proportional to 720,980.41, 1,082,120.64 and 384,301.48

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Solution

The fourth proportional to 720,980.41, 1,082,120.64 and 384,301.48 is: 576,798.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,980.41 : 1,082,120.64 = 384,301.48 : x
  2. Step 2: Convert to fraction form
    720,980.41/1,082,120.64 = 384,301.48/x
  3. Step 3: Cross multiply
    720,980.41x = 1,082,120.64 × 384,301.48
  4. Step 4: Simplify right side
    720,980.41x = 415,860,563,490.55
  5. Step 5: Solve for x
    x = 415,860,563,490.55/720,980.41
  6. Step 6: Final answer
    x = 576,798.70

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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.