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Finding the Fourth Proportional to 655,209,124.94, 982,951,886.72 and 212,517,423.88

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Solution

The fourth proportional to 655,209,124.94, 982,951,886.72 and 212,517,423.88 is: 318,820,960.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,209,124.94 : 982,951,886.72 = 212,517,423.88 : x
  2. Step 2: Convert to fraction form
    655,209,124.94/982,951,886.72 = 212,517,423.88/x
  3. Step 3: Cross multiply
    655,209,124.94x = 982,951,886.72 × 212,517,423.88
  4. Step 4: Simplify right side
    655,209,124.94x = 208,894,402,763,720,000
  5. Step 5: Solve for x
    x = 208,894,402,763,720,000/655,209,124.94
  6. Step 6: Final answer
    x = 318,820,960.84

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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.