Home / 1,105,123.56-1,657,961.24-385,475.70

Finding the Fourth Proportional to 1,105,123.56, 1,657,961.24 and 385,475.70

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Solution

The fourth proportional to 1,105,123.56, 1,657,961.24 and 385,475.70 is: 578,309.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105,123.56 : 1,657,961.24 = 385,475.70 : x
  2. Step 2: Convert to fraction form
    1,105,123.56/1,657,961.24 = 385,475.70/x
  3. Step 3: Cross multiply
    1,105,123.56x = 1,657,961.24 × 385,475.70
  4. Step 4: Simplify right side
    1,105,123.56x = 639,103,769,561.87
  5. Step 5: Solve for x
    x = 639,103,769,561.87/1,105,123.56
  6. Step 6: Final answer
    x = 578,309.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.