Home / 1,275,411,072.80-1,911,912,884.40-692,285,722.40

Finding the Fourth Proportional to 1,275,411,072.80, 1,911,912,884.40 and 692,285,722.40

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Solution

The fourth proportional to 1,275,411,072.80, 1,911,912,884.40 and 692,285,722.40 is: 1,037,775,208.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,411,072.80 : 1,911,912,884.40 = 692,285,722.40 : x
  2. Step 2: Convert to fraction form
    1,275,411,072.80/1,911,912,884.40 = 692,285,722.40/x
  3. Step 3: Cross multiply
    1,275,411,072.80x = 1,911,912,884.40 × 692,285,722.40
  4. Step 4: Simplify right side
    1,275,411,072.80x = 1,323,589,992,342,721,792
  5. Step 5: Solve for x
    x = 1,323,589,992,342,721,792/1,275,411,072.80
  6. Step 6: Final answer
    x = 1,037,775,208.77

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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.