Home / 991,399,187.72-1,486,783,281.03-327,289,554.46

Finding the Fourth Proportional to 991,399,187.72, 1,486,783,281.03 and 327,289,554.46

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Solution

The fourth proportional to 991,399,187.72, 1,486,783,281.03 and 327,289,554.46 is: 490,830,175.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,399,187.72 : 1,486,783,281.03 = 327,289,554.46 : x
  2. Step 2: Convert to fraction form
    991,399,187.72/1,486,783,281.03 = 327,289,554.46/x
  3. Step 3: Cross multiply
    991,399,187.72x = 1,486,783,281.03 × 327,289,554.46
  4. Step 4: Simplify right side
    991,399,187.72x = 486,608,637,626,885,632
  5. Step 5: Solve for x
    x = 486,608,637,626,885,632/991,399,187.72
  6. Step 6: Final answer
    x = 490,830,175.83

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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.