Home / 591,252.47-815,078.10-421,191.35

Finding the Fourth Proportional to 591,252.47, 815,078.10 and 421,191.35

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Solution

The fourth proportional to 591,252.47, 815,078.10 and 421,191.35 is: 580,638.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,252.47 : 815,078.10 = 421,191.35 : x
  2. Step 2: Convert to fraction form
    591,252.47/815,078.10 = 421,191.35/x
  3. Step 3: Cross multiply
    591,252.47x = 815,078.10 × 421,191.35
  4. Step 4: Simplify right side
    591,252.47x = 343,303,846,962.86
  5. Step 5: Solve for x
    x = 343,303,846,962.86/591,252.47
  6. Step 6: Final answer
    x = 580,638.33

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Why These Related Problems?

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