Home / 1,222,138,977,421.10-1,686,640,928,078.50-708,437,392,970.58

Finding the Fourth Proportional to 1,222,138,977,421.10, 1,686,640,928,078.50 and 708,437,392,970.58

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Solution

The fourth proportional to 1,222,138,977,421.10, 1,686,640,928,078.50 and 708,437,392,970.58 is: 977,695,273,647.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,138,977,421.10 : 1,686,640,928,078.50 = 708,437,392,970.58 : x
  2. Step 2: Convert to fraction form
    1,222,138,977,421.10/1,686,640,928,078.50 = 708,437,392,970.58/x
  3. Step 3: Cross multiply
    1,222,138,977,421.10x = 1,686,640,928,078.50 × 708,437,392,970.58
  4. Step 4: Simplify right side
    1,222,138,977,421.10x = 1,194,879,501,965,412,026,810,368
  5. Step 5: Solve for x
    x = 1,194,879,501,965,412,026,810,368/1,222,138,977,421.10
  6. Step 6: Final answer
    x = 977,695,273,647.84

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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.