Home / 1,119,747,772.80-1,679,621,659.20-392,642,006.40

Finding the Fourth Proportional to 1,119,747,772.80, 1,679,621,659.20 and 392,642,006.40

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Solution

The fourth proportional to 1,119,747,772.80, 1,679,621,659.20 and 392,642,006.40 is: 588,963,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,747,772.80 : 1,679,621,659.20 = 392,642,006.40 : x
  2. Step 2: Convert to fraction form
    1,119,747,772.80/1,679,621,659.20 = 392,642,006.40/x
  3. Step 3: Cross multiply
    1,119,747,772.80x = 1,679,621,659.20 × 392,642,006.40
  4. Step 4: Simplify right side
    1,119,747,772.80x = 659,490,018,261,185,024
  5. Step 5: Solve for x
    x = 659,490,018,261,185,024/1,119,747,772.80
  6. Step 6: Final answer
    x = 588,963,009.60

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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.