Home / 591,433.29-815,328.12-421,372.17

Finding the Fourth Proportional to 591,433.29, 815,328.12 and 421,372.17

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Solution

The fourth proportional to 591,433.29, 815,328.12 and 421,372.17 is: 580,888.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,433.29 : 815,328.12 = 421,372.17 : x
  2. Step 2: Convert to fraction form
    591,433.29/815,328.12 = 421,372.17/x
  3. Step 3: Cross multiply
    591,433.29x = 815,328.12 × 421,372.17
  4. Step 4: Simplify right side
    591,433.29x = 343,556,579,186.42
  5. Step 5: Solve for x
    x = 343,556,579,186.42/591,433.29
  6. Step 6: Final answer
    x = 580,888.13

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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.