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Finding the Fourth Proportional to 578,360.70, 798,147.61 and 316,738.94

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Solution

The fourth proportional to 578,360.70, 798,147.61 and 316,738.94 is: 437,105.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,360.70 : 798,147.61 = 316,738.94 : x
  2. Step 2: Convert to fraction form
    578,360.70/798,147.61 = 316,738.94/x
  3. Step 3: Cross multiply
    578,360.70x = 798,147.61 × 316,738.94
  4. Step 4: Simplify right side
    578,360.70x = 252,804,423,172.35
  5. Step 5: Solve for x
    x = 252,804,423,172.35/578,360.70
  6. Step 6: Final answer
    x = 437,105.12

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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.