Home / 1,010,640,090.30-1,515,960,135.45-492,803,979.90

Finding the Fourth Proportional to 1,010,640,090.30, 1,515,960,135.45 and 492,803,979.90

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Solution

The fourth proportional to 1,010,640,090.30, 1,515,960,135.45 and 492,803,979.90 is: 739,205,969.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010,640,090.30 : 1,515,960,135.45 = 492,803,979.90 : x
  2. Step 2: Convert to fraction form
    1,010,640,090.30/1,515,960,135.45 = 492,803,979.90/x
  3. Step 3: Cross multiply
    1,010,640,090.30x = 1,515,960,135.45 × 492,803,979.90
  4. Step 4: Simplify right side
    1,010,640,090.30x = 747,071,188,119,503,104
  5. Step 5: Solve for x
    x = 747,071,188,119,503,104/1,010,640,090.30
  6. Step 6: Final answer
    x = 739,205,969.85

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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.