Home / 1,581,172,953.58-2,180,746,370.73-1,390,025,269.59

Finding the Fourth Proportional to 1,581,172,953.58, 2,180,746,370.73 and 1,390,025,269.59

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Solution

The fourth proportional to 1,581,172,953.58, 2,180,746,370.73 and 1,390,025,269.59 is: 1,917,116,375.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581,172,953.58 : 2,180,746,370.73 = 1,390,025,269.59 : x
  2. Step 2: Convert to fraction form
    1,581,172,953.58/2,180,746,370.73 = 1,390,025,269.59/x
  3. Step 3: Cross multiply
    1,581,172,953.58x = 2,180,746,370.73 × 1,390,025,269.59
  4. Step 4: Simplify right side
    1,581,172,953.58x = 3,031,292,561,881,382,400
  5. Step 5: Solve for x
    x = 3,031,292,561,881,382,400/1,581,172,953.58
  6. Step 6: Final answer
    x = 1,917,116,375.55

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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.