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Finding the Fourth Proportional to 489,942,604.80, 734,913,907.20 and 444,592,972.80

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Solution

The fourth proportional to 489,942,604.80, 734,913,907.20 and 444,592,972.80 is: 666,889,459.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,942,604.80 : 734,913,907.20 = 444,592,972.80 : x
  2. Step 2: Convert to fraction form
    489,942,604.80/734,913,907.20 = 444,592,972.80/x
  3. Step 3: Cross multiply
    489,942,604.80x = 734,913,907.20 × 444,592,972.80
  4. Step 4: Simplify right side
    489,942,604.80x = 326,737,558,754,111,360
  5. Step 5: Solve for x
    x = 326,737,558,754,111,360/489,942,604.80
  6. Step 6: Final answer
    x = 666,889,459.20

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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.