Home / 559,140.24-771,645.96-421,072

Finding the Fourth Proportional to 559,140.24, 771,645.96 and 421,072

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Solution

The fourth proportional to 559,140.24, 771,645.96 and 421,072 is: 581,103.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,140.24 : 771,645.96 = 421,072 : x
  2. Step 2: Convert to fraction form
    559,140.24/771,645.96 = 421,072/x
  3. Step 3: Cross multiply
    559,140.24x = 771,645.96 × 421,072
  4. Step 4: Simplify right side
    559,140.24x = 324,918,507,669.12
  5. Step 5: Solve for x
    x = 324,918,507,669.12/559,140.24
  6. Step 6: Final answer
    x = 581,103.78

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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.