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Finding the Fourth Proportional to 666,244.68, 997,765.65 and 381,070.98

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Solution

The fourth proportional to 666,244.68, 997,765.65 and 381,070.98 is: 570,690.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,244.68 : 997,765.65 = 381,070.98 : x
  2. Step 2: Convert to fraction form
    666,244.68/997,765.65 = 381,070.98/x
  3. Step 3: Cross multiply
    666,244.68x = 997,765.65 × 381,070.98
  4. Step 4: Simplify right side
    666,244.68x = 380,219,534,055.84
  5. Step 5: Solve for x
    x = 380,219,534,055.84/666,244.68
  6. Step 6: Final answer
    x = 570,690.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.