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Finding the Fourth Proportional to 520,661.64, 781,109.68 and 183,726.30

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Solution

The fourth proportional to 520,661.64, 781,109.68 and 183,726.30 is: 275,630.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,661.64 : 781,109.68 = 183,726.30 : x
  2. Step 2: Convert to fraction form
    520,661.64/781,109.68 = 183,726.30/x
  3. Step 3: Cross multiply
    520,661.64x = 781,109.68 × 183,726.30
  4. Step 4: Simplify right side
    520,661.64x = 143,510,391,400.58
  5. Step 5: Solve for x
    x = 143,510,391,400.58/520,661.64
  6. Step 6: Final answer
    x = 275,630.81

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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.