Home / 1,310,257,098.60-1,965,385,647.90-1,210,487,908.20

Finding the Fourth Proportional to 1,310,257,098.60, 1,965,385,647.90 and 1,210,487,908.20

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Solution

The fourth proportional to 1,310,257,098.60, 1,965,385,647.90 and 1,210,487,908.20 is: 1,815,731,862.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310,257,098.60 : 1,965,385,647.90 = 1,210,487,908.20 : x
  2. Step 2: Convert to fraction form
    1,310,257,098.60/1,965,385,647.90 = 1,210,487,908.20/x
  3. Step 3: Cross multiply
    1,310,257,098.60x = 1,965,385,647.90 × 1,210,487,908.20
  4. Step 4: Simplify right side
    1,310,257,098.60x = 2,379,075,561,732,772,864
  5. Step 5: Solve for x
    x = 2,379,075,561,732,772,864/1,310,257,098.60
  6. Step 6: Final answer
    x = 1,815,731,862.30

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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.