Home / 785,490.18-1,178,327.55-280,123.01

Finding the Fourth Proportional to 785,490.18, 1,178,327.55 and 280,123.01

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Solution

The fourth proportional to 785,490.18, 1,178,327.55 and 280,123.01 is: 420,217.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,490.18 : 1,178,327.55 = 280,123.01 : x
  2. Step 2: Convert to fraction form
    785,490.18/1,178,327.55 = 280,123.01/x
  3. Step 3: Cross multiply
    785,490.18x = 1,178,327.55 × 280,123.01
  4. Step 4: Simplify right side
    785,490.18x = 330,076,653,655.06
  5. Step 5: Solve for x
    x = 330,076,653,655.06/785,490.18
  6. Step 6: Final answer
    x = 420,217.41

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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.