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Finding the Fourth Proportional to 611,460.60, 917,190.90 and 384,121.95

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Solution

The fourth proportional to 611,460.60, 917,190.90 and 384,121.95 is: 576,182.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,460.60 : 917,190.90 = 384,121.95 : x
  2. Step 2: Convert to fraction form
    611,460.60/917,190.90 = 384,121.95/x
  3. Step 3: Cross multiply
    611,460.60x = 917,190.90 × 384,121.95
  4. Step 4: Simplify right side
    611,460.60x = 352,313,157,030.26
  5. Step 5: Solve for x
    x = 352,313,157,030.26/611,460.60
  6. Step 6: Final answer
    x = 576,182.93

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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.