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Finding the Fourth Proportional to 578,285.46, 798,006.74 and 316,636.02

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Solution

The fourth proportional to 578,285.46, 798,006.74 and 316,636.02 is: 436,942.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,285.46 : 798,006.74 = 316,636.02 : x
  2. Step 2: Convert to fraction form
    578,285.46/798,006.74 = 316,636.02/x
  3. Step 3: Cross multiply
    578,285.46x = 798,006.74 × 316,636.02
  4. Step 4: Simplify right side
    578,285.46x = 252,677,676,503.60
  5. Step 5: Solve for x
    x = 252,677,676,503.60/578,285.46
  6. Step 6: Final answer
    x = 436,942.81

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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.