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Finding the Fourth Proportional to 558,018.80, 770,057.40 and 303,367.76

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Solution

The fourth proportional to 558,018.80, 770,057.40 and 303,367.76 is: 418,642.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,018.80 : 770,057.40 = 303,367.76 : x
  2. Step 2: Convert to fraction form
    558,018.80/770,057.40 = 303,367.76/x
  3. Step 3: Cross multiply
    558,018.80x = 770,057.40 × 303,367.76
  4. Step 4: Simplify right side
    558,018.80x = 233,610,588,509.42
  5. Step 5: Solve for x
    x = 233,610,588,509.42/558,018.80
  6. Step 6: Final answer
    x = 418,642.86

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1.5x scale

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.