Home / 1,328,608,271.20-1,992,912,406.80-408,365,035.60

Finding the Fourth Proportional to 1,328,608,271.20, 1,992,912,406.80 and 408,365,035.60

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Solution

The fourth proportional to 1,328,608,271.20, 1,992,912,406.80 and 408,365,035.60 is: 612,547,553.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,608,271.20 : 1,992,912,406.80 = 408,365,035.60 : x
  2. Step 2: Convert to fraction form
    1,328,608,271.20/1,992,912,406.80 = 408,365,035.60/x
  3. Step 3: Cross multiply
    1,328,608,271.20x = 1,992,912,406.80 × 408,365,035.60
  4. Step 4: Simplify right side
    1,328,608,271.20x = 813,835,745,950,563,712
  5. Step 5: Solve for x
    x = 813,835,745,950,563,712/1,328,608,271.20
  6. Step 6: Final answer
    x = 612,547,553.40

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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.