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Finding the Fourth Proportional to 559,160.40, 771,673.76 and 421,092.08

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Solution

The fourth proportional to 559,160.40, 771,673.76 and 421,092.08 is: 581,131.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,160.40 : 771,673.76 = 421,092.08 : x
  2. Step 2: Convert to fraction form
    559,160.40/771,673.76 = 421,092.08/x
  3. Step 3: Cross multiply
    559,160.40x = 771,673.76 × 421,092.08
  4. Step 4: Simplify right side
    559,160.40x = 324,945,708,679.82
  5. Step 5: Solve for x
    x = 324,945,708,679.82/559,160.40
  6. Step 6: Final answer
    x = 581,131.48

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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.