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Finding the Fourth Proportional to 558,036.80, 770,082.32 and 303,385.76

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Solution

The fourth proportional to 558,036.80, 770,082.32 and 303,385.76 is: 418,667.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,036.80 : 770,082.32 = 303,385.76 : x
  2. Step 2: Convert to fraction form
    558,036.80/770,082.32 = 303,385.76/x
  3. Step 3: Cross multiply
    558,036.80x = 770,082.32 × 303,385.76
  4. Step 4: Simplify right side
    558,036.80x = 233,632,009,915.76
  5. Step 5: Solve for x
    x = 233,632,009,915.76/558,036.80
  6. Step 6: Final answer
    x = 418,667.75

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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.