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Finding the Fourth Proportional to 617,340.62, 851,557.08 and 407,789.80

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Solution

The fourth proportional to 617,340.62, 851,557.08 and 407,789.80 is: 562,503.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,340.62 : 851,557.08 = 407,789.80 : x
  2. Step 2: Convert to fraction form
    617,340.62/851,557.08 = 407,789.80/x
  3. Step 3: Cross multiply
    617,340.62x = 851,557.08 × 407,789.80
  4. Step 4: Simplify right side
    617,340.62x = 347,256,291,341.78
  5. Step 5: Solve for x
    x = 347,256,291,341.78/617,340.62
  6. Step 6: Final answer
    x = 562,503.55

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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.