Home / 1,285,067,338.71-1,772,740,264.50-839,291,638.55

Finding the Fourth Proportional to 1,285,067,338.71, 1,772,740,264.50 and 839,291,638.55

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Solution

The fourth proportional to 1,285,067,338.71, 1,772,740,264.50 and 839,291,638.55 is: 1,157,796,199.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,067,338.71 : 1,772,740,264.50 = 839,291,638.55 : x
  2. Step 2: Convert to fraction form
    1,285,067,338.71/1,772,740,264.50 = 839,291,638.55/x
  3. Step 3: Cross multiply
    1,285,067,338.71x = 1,772,740,264.50 × 839,291,638.55
  4. Step 4: Simplify right side
    1,285,067,338.71x = 1,487,846,081,326,779,136
  5. Step 5: Solve for x
    x = 1,487,846,081,326,779,136/1,285,067,338.71
  6. Step 6: Final answer
    x = 1,157,796,199.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.