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Finding the Fourth Proportional to 664,011,612.80, 996,017,419.20 and 446,333,379.20

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Solution

The fourth proportional to 664,011,612.80, 996,017,419.20 and 446,333,379.20 is: 669,500,068.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,011,612.80 : 996,017,419.20 = 446,333,379.20 : x
  2. Step 2: Convert to fraction form
    664,011,612.80/996,017,419.20 = 446,333,379.20/x
  3. Step 3: Cross multiply
    664,011,612.80x = 996,017,419.20 × 446,333,379.20
  4. Step 4: Simplify right side
    664,011,612.80x = 444,555,820,453,598,976
  5. Step 5: Solve for x
    x = 444,555,820,453,598,976/664,011,612.80
  6. Step 6: Final answer
    x = 669,500,068.80

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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.