Home / 591,421.23-815,311.62-421,360.11

Finding the Fourth Proportional to 591,421.23, 815,311.62 and 421,360.11

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Solution

The fourth proportional to 591,421.23, 815,311.62 and 421,360.11 is: 580,871.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,421.23 : 815,311.62 = 421,360.11 : x
  2. Step 2: Convert to fraction form
    591,421.23/815,311.62 = 421,360.11/x
  3. Step 3: Cross multiply
    591,421.23x = 815,311.62 × 421,360.11
  4. Step 4: Simplify right side
    591,421.23x = 343,539,793,887.48
  5. Step 5: Solve for x
    x = 343,539,793,887.48/591,421.23
  6. Step 6: Final answer
    x = 580,871.60

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.