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Finding the Fourth Proportional to 559,874,999.20, 839,812,498.80 and 491,850,551.20

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Solution

The fourth proportional to 559,874,999.20, 839,812,498.80 and 491,850,551.20 is: 737,775,826.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,874,999.20 : 839,812,498.80 = 491,850,551.20 : x
  2. Step 2: Convert to fraction form
    559,874,999.20/839,812,498.80 = 491,850,551.20/x
  3. Step 3: Cross multiply
    559,874,999.20x = 839,812,498.80 × 491,850,551.20
  4. Step 4: Simplify right side
    559,874,999.20x = 413,062,240,439,429,312
  5. Step 5: Solve for x
    x = 413,062,240,439,429,312/559,874,999.20
  6. Step 6: Final answer
    x = 737,775,826.80

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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.