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Finding the Fourth Proportional to 559,638.37, 772,278.42 and 304,984.09

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Solution

The fourth proportional to 559,638.37, 772,278.42 and 304,984.09 is: 420,865.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,638.37 : 772,278.42 = 304,984.09 : x
  2. Step 2: Convert to fraction form
    559,638.37/772,278.42 = 304,984.09/x
  3. Step 3: Cross multiply
    559,638.37x = 772,278.42 × 304,984.09
  4. Step 4: Simplify right side
    559,638.37x = 235,532,631,150.34
  5. Step 5: Solve for x
    x = 235,532,631,150.34/559,638.37
  6. Step 6: Final answer
    x = 420,865.77

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1.5x scale

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.