Home / 1,211,274,000.80-1,816,911,001.20-393,468,970.40

Finding the Fourth Proportional to 1,211,274,000.80, 1,816,911,001.20 and 393,468,970.40

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Solution

The fourth proportional to 1,211,274,000.80, 1,816,911,001.20 and 393,468,970.40 is: 590,203,455.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,274,000.80 : 1,816,911,001.20 = 393,468,970.40 : x
  2. Step 2: Convert to fraction form
    1,211,274,000.80/1,816,911,001.20 = 393,468,970.40/x
  3. Step 3: Cross multiply
    1,211,274,000.80x = 1,816,911,001.20 × 393,468,970.40
  4. Step 4: Simplify right side
    1,211,274,000.80x = 714,898,100,950,597,120
  5. Step 5: Solve for x
    x = 714,898,100,950,597,120/1,211,274,000.80
  6. Step 6: Final answer
    x = 590,203,455.60

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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.