Home / 1,379,186,999.20-2,068,775,055.60-409,838,615.20

Finding the Fourth Proportional to 1,379,186,999.20, 2,068,775,055.60 and 409,838,615.20

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Solution

The fourth proportional to 1,379,186,999.20, 2,068,775,055.60 and 409,838,615.20 is: 614,756,305.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379,186,999.20 : 2,068,775,055.60 = 409,838,615.20 : x
  2. Step 2: Convert to fraction form
    1,379,186,999.20/2,068,775,055.60 = 409,838,615.20/x
  3. Step 3: Cross multiply
    1,379,186,999.20x = 2,068,775,055.60 × 409,838,615.20
  4. Step 4: Simplify right side
    1,379,186,999.20x = 847,863,903,947,406,976
  5. Step 5: Solve for x
    x = 847,863,903,947,406,976/1,379,186,999.20
  6. Step 6: Final answer
    x = 614,756,305.30

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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.