Home / 558,018.55-770,031.16-312,989.82

Finding the Fourth Proportional to 558,018.55, 770,031.16 and 312,989.82

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Solution

The fourth proportional to 558,018.55, 770,031.16 and 312,989.82 is: 431,906.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,018.55 : 770,031.16 = 312,989.82 : x
  2. Step 2: Convert to fraction form
    558,018.55/770,031.16 = 312,989.82/x
  3. Step 3: Cross multiply
    558,018.55x = 770,031.16 × 312,989.82
  4. Step 4: Simplify right side
    558,018.55x = 241,011,914,162.79
  5. Step 5: Solve for x
    x = 241,011,914,162.79/558,018.55
  6. Step 6: Final answer
    x = 431,906.63

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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.