Home / 1,511,552,858.40-2,267,329,287.60-639,139,312.80

Finding the Fourth Proportional to 1,511,552,858.40, 2,267,329,287.60 and 639,139,312.80

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Solution

The fourth proportional to 1,511,552,858.40, 2,267,329,287.60 and 639,139,312.80 is: 958,708,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511,552,858.40 : 2,267,329,287.60 = 639,139,312.80 : x
  2. Step 2: Convert to fraction form
    1,511,552,858.40/2,267,329,287.60 = 639,139,312.80/x
  3. Step 3: Cross multiply
    1,511,552,858.40x = 2,267,329,287.60 × 639,139,312.80
  4. Step 4: Simplify right side
    1,511,552,858.40x = 1,449,139,282,767,977,472
  5. Step 5: Solve for x
    x = 1,449,139,282,767,977,472/1,511,552,858.40
  6. Step 6: Final answer
    x = 958,708,969.20

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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.