Home / 1,119,171,151.20-1,678,756,726.80-392,084,047.20

Finding the Fourth Proportional to 1,119,171,151.20, 1,678,756,726.80 and 392,084,047.20

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Solution

The fourth proportional to 1,119,171,151.20, 1,678,756,726.80 and 392,084,047.20 is: 588,126,070.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,171,151.20 : 1,678,756,726.80 = 392,084,047.20 : x
  2. Step 2: Convert to fraction form
    1,119,171,151.20/1,678,756,726.80 = 392,084,047.20/x
  3. Step 3: Cross multiply
    1,119,171,151.20x = 1,678,756,726.80 × 392,084,047.20
  4. Step 4: Simplify right side
    1,119,171,151.20x = 658,213,731,707,968,640
  5. Step 5: Solve for x
    x = 658,213,731,707,968,640/1,119,171,151.20
  6. Step 6: Final answer
    x = 588,126,070.80

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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.