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Finding the Fourth Proportional to 559,670.10, 772,345.49 and 305,021.30

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Solution

The fourth proportional to 559,670.10, 772,345.49 and 305,021.30 is: 420,929.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,670.10 : 772,345.49 = 305,021.30 : x
  2. Step 2: Convert to fraction form
    559,670.10/772,345.49 = 305,021.30/x
  3. Step 3: Cross multiply
    559,670.10x = 772,345.49 × 305,021.30
  4. Step 4: Simplify right side
    559,670.10x = 235,581,820,022.10
  5. Step 5: Solve for x
    x = 235,581,820,022.10/559,670.10
  6. Step 6: Final answer
    x = 420,929.79

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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.