Home / 808,725,901.20-1,213,088,851.80-324,399,296.40

Finding the Fourth Proportional to 808,725,901.20, 1,213,088,851.80 and 324,399,296.40

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Solution

The fourth proportional to 808,725,901.20, 1,213,088,851.80 and 324,399,296.40 is: 486,598,944.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,725,901.20 : 1,213,088,851.80 = 324,399,296.40 : x
  2. Step 2: Convert to fraction form
    808,725,901.20/1,213,088,851.80 = 324,399,296.40/x
  3. Step 3: Cross multiply
    808,725,901.20x = 1,213,088,851.80 × 324,399,296.40
  4. Step 4: Simplify right side
    808,725,901.20x = 393,525,169,994,603,840
  5. Step 5: Solve for x
    x = 393,525,169,994,603,840/808,725,901.20
  6. Step 6: Final answer
    x = 486,598,944.60

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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.