Home / 591,497.64-815,417.10-421,436.52

Finding the Fourth Proportional to 591,497.64, 815,417.10 and 421,436.52

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Solution

The fourth proportional to 591,497.64, 815,417.10 and 421,436.52 is: 580,977.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,497.64 : 815,417.10 = 421,436.52 : x
  2. Step 2: Convert to fraction form
    591,497.64/815,417.10 = 421,436.52/x
  3. Step 3: Cross multiply
    591,497.64x = 815,417.10 × 421,436.52
  4. Step 4: Simplify right side
    591,497.64x = 343,646,544,972.49
  5. Step 5: Solve for x
    x = 343,646,544,972.49/591,497.64
  6. Step 6: Final answer
    x = 580,977.03

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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.