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Finding the Fourth Proportional to 559,873,999.70, 839,810,999.55 and 491,849,551.70

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Solution

The fourth proportional to 559,873,999.70, 839,810,999.55 and 491,849,551.70 is: 737,774,327.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,873,999.70 : 839,810,999.55 = 491,849,551.70 : x
  2. Step 2: Convert to fraction form
    559,873,999.70/839,810,999.55 = 491,849,551.70/x
  3. Step 3: Cross multiply
    559,873,999.70x = 839,810,999.55 × 491,849,551.70
  4. Step 4: Simplify right side
    559,873,999.70x = 413,060,663,641,396,352
  5. Step 5: Solve for x
    x = 413,060,663,641,396,352/559,873,999.70
  6. Step 6: Final answer
    x = 737,774,327.55

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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.