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Finding the Fourth Proportional to 1,443,645,672.76, 1,992,179,482.06 and 817,100,648.68

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Solution

The fourth proportional to 1,443,645,672.76, 1,992,179,482.06 and 817,100,648.68 is: 1,127,569,720.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443,645,672.76 : 1,992,179,482.06 = 817,100,648.68 : x
  2. Step 2: Convert to fraction form
    1,443,645,672.76/1,992,179,482.06 = 817,100,648.68/x
  3. Step 3: Cross multiply
    1,443,645,672.76x = 1,992,179,482.06 × 817,100,648.68
  4. Step 4: Simplify right side
    1,443,645,672.76x = 1,627,811,147,078,212,352
  5. Step 5: Solve for x
    x = 1,627,811,147,078,212,352/1,443,645,672.76
  6. Step 6: Final answer
    x = 1,127,569,720.05

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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.