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Finding the Fourth Proportional to 559,872,807.70, 839,809,211.55 and 521,609,055.70

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Solution

The fourth proportional to 559,872,807.70, 839,809,211.55 and 521,609,055.70 is: 782,413,583.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,872,807.70 : 839,809,211.55 = 521,609,055.70 : x
  2. Step 2: Convert to fraction form
    559,872,807.70/839,809,211.55 = 521,609,055.70/x
  3. Step 3: Cross multiply
    559,872,807.70x = 839,809,211.55 × 521,609,055.70
  4. Step 4: Simplify right side
    559,872,807.70x = 438,052,089,804,756,992
  5. Step 5: Solve for x
    x = 438,052,089,804,756,992/559,872,807.70
  6. Step 6: Final answer
    x = 782,413,583.55

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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.