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Finding the Fourth Proportional to 559,688.88, 772,386.84 and 305,056.56

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Solution

The fourth proportional to 559,688.88, 772,386.84 and 305,056.56 is: 420,986.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,688.88 : 772,386.84 = 305,056.56 : x
  2. Step 2: Convert to fraction form
    559,688.88/772,386.84 = 305,056.56/x
  3. Step 3: Cross multiply
    559,688.88x = 772,386.84 × 305,056.56
  4. Step 4: Simplify right side
    559,688.88x = 235,621,672,399.67
  5. Step 5: Solve for x
    x = 235,621,672,399.67/559,688.88
  6. Step 6: Final answer
    x = 420,986.87

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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.