Home / 820,508,875.20-1,230,763,312.80-246,080,203.20

Finding the Fourth Proportional to 820,508,875.20, 1,230,763,312.80 and 246,080,203.20

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Solution

The fourth proportional to 820,508,875.20, 1,230,763,312.80 and 246,080,203.20 is: 369,120,304.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,508,875.20 : 1,230,763,312.80 = 246,080,203.20 : x
  2. Step 2: Convert to fraction form
    820,508,875.20/1,230,763,312.80 = 246,080,203.20/x
  3. Step 3: Cross multiply
    820,508,875.20x = 1,230,763,312.80 × 246,080,203.20
  4. Step 4: Simplify right side
    820,508,875.20x = 302,866,486,104,929,152
  5. Step 5: Solve for x
    x = 302,866,486,104,929,152/820,508,875.20
  6. Step 6: Final answer
    x = 369,120,304.80

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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.