Home / 529,821.04-731,130.79-300,393.76

Finding the Fourth Proportional to 529,821.04, 731,130.79 and 300,393.76

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Solution

The fourth proportional to 529,821.04, 731,130.79 and 300,393.76 is: 414,530.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,821.04 : 731,130.79 = 300,393.76 : x
  2. Step 2: Convert to fraction form
    529,821.04/731,130.79 = 300,393.76/x
  3. Step 3: Cross multiply
    529,821.04x = 731,130.79 × 300,393.76
  4. Step 4: Simplify right side
    529,821.04x = 219,627,127,059.87
  5. Step 5: Solve for x
    x = 219,627,127,059.87/529,821.04
  6. Step 6: Final answer
    x = 414,530.78

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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.