Home / 1,252,355,288.76-1,878,222,506.72-423,290,499.80

Finding the Fourth Proportional to 1,252,355,288.76, 1,878,222,506.72 and 423,290,499.80

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Solution

The fourth proportional to 1,252,355,288.76, 1,878,222,506.72 and 423,290,499.80 is: 634,830,826.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,252,355,288.76 : 1,878,222,506.72 = 423,290,499.80 : x
  2. Step 2: Convert to fraction form
    1,252,355,288.76/1,878,222,506.72 = 423,290,499.80/x
  3. Step 3: Cross multiply
    1,252,355,288.76x = 1,878,222,506.72 × 423,290,499.80
  4. Step 4: Simplify right side
    1,252,355,288.76x = 795,033,743,593,610,112
  5. Step 5: Solve for x
    x = 795,033,743,593,610,112/1,252,355,288.76
  6. Step 6: Final answer
    x = 634,830,826.95

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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.