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Finding the Fourth Proportional to 662,820,018.88, 993,104,897.82 and 399,952,199.80

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Solution

The fourth proportional to 662,820,018.88, 993,104,897.82 and 399,952,199.80 is: 599,249,384.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,820,018.88 : 993,104,897.82 = 399,952,199.80 : x
  2. Step 2: Convert to fraction form
    662,820,018.88/993,104,897.82 = 399,952,199.80/x
  3. Step 3: Cross multiply
    662,820,018.88x = 993,104,897.82 × 399,952,199.80
  4. Step 4: Simplify right side
    662,820,018.88x = 397,194,488,515,263,232
  5. Step 5: Solve for x
    x = 397,194,488,515,263,232/662,820,018.88
  6. Step 6: Final answer
    x = 599,249,384.75

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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.