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Finding the Fourth Proportional to 993,957,331.60, 1,490,922,000.60 and 448,697,990.80

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Solution

The fourth proportional to 993,957,331.60, 1,490,922,000.60 and 448,697,990.80 is: 673,040,667.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,957,331.60 : 1,490,922,000.60 = 448,697,990.80 : x
  2. Step 2: Convert to fraction form
    993,957,331.60/1,490,922,000.60 = 448,697,990.80/x
  3. Step 3: Cross multiply
    993,957,331.60x = 1,490,922,000.60 × 448,697,990.80
  4. Step 4: Simplify right side
    993,957,331.60x = 668,973,706,108,736,384
  5. Step 5: Solve for x
    x = 668,973,706,108,736,384/993,957,331.60
  6. Step 6: Final answer
    x = 673,040,667.68

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1.5x scale

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.