Home / 870,439,719.20-1,305,659,578.80-611,946,816.80

Finding the Fourth Proportional to 870,439,719.20, 1,305,659,578.80 and 611,946,816.80

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Solution

The fourth proportional to 870,439,719.20, 1,305,659,578.80 and 611,946,816.80 is: 917,920,225.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,439,719.20 : 1,305,659,578.80 = 611,946,816.80 : x
  2. Step 2: Convert to fraction form
    870,439,719.20/1,305,659,578.80 = 611,946,816.80/x
  3. Step 3: Cross multiply
    870,439,719.20x = 1,305,659,578.80 × 611,946,816.80
  4. Step 4: Simplify right side
    870,439,719.20x = 798,994,223,071,088,640
  5. Step 5: Solve for x
    x = 798,994,223,071,088,640/870,439,719.20
  6. Step 6: Final answer
    x = 917,920,225.20

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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.