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Finding the Fourth Proportional to 1,329,696,002.60, 1,994,544,003.90 and 778,697,973.80

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Solution

The fourth proportional to 1,329,696,002.60, 1,994,544,003.90 and 778,697,973.80 is: 1,168,046,960.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,696,002.60 : 1,994,544,003.90 = 778,697,973.80 : x
  2. Step 2: Convert to fraction form
    1,329,696,002.60/1,994,544,003.90 = 778,697,973.80/x
  3. Step 3: Cross multiply
    1,329,696,002.60x = 1,994,544,003.90 × 778,697,973.80
  4. Step 4: Simplify right side
    1,329,696,002.60x = 1,553,147,374,491,869,184
  5. Step 5: Solve for x
    x = 1,553,147,374,491,869,184/1,329,696,002.60
  6. Step 6: Final answer
    x = 1,168,046,960.70

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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.