Home / 558,014.05-770,024.94-312,985.30

Finding the Fourth Proportional to 558,014.05, 770,024.94 and 312,985.30

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Solution

The fourth proportional to 558,014.05, 770,024.94 and 312,985.30 is: 431,900.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,014.05 : 770,024.94 = 312,985.30 : x
  2. Step 2: Convert to fraction form
    558,014.05/770,024.94 = 312,985.30/x
  3. Step 3: Cross multiply
    558,014.05x = 770,024.94 × 312,985.30
  4. Step 4: Simplify right side
    558,014.05x = 241,006,486,853.38
  5. Step 5: Solve for x
    x = 241,006,486,853.38/558,014.05
  6. Step 6: Final answer
    x = 431,900.39

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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.