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Finding the Fourth Proportional to 617,363.81, 851,794.85 and 423,830.70

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Solution

The fourth proportional to 617,363.81, 851,794.85 and 423,830.70 is: 584,771.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,363.81 : 851,794.85 = 423,830.70 : x
  2. Step 2: Convert to fraction form
    617,363.81/851,794.85 = 423,830.70/x
  3. Step 3: Cross multiply
    617,363.81x = 851,794.85 × 423,830.70
  4. Step 4: Simplify right side
    617,363.81x = 361,016,805,412.74
  5. Step 5: Solve for x
    x = 361,016,805,412.74/617,363.81
  6. Step 6: Final answer
    x = 584,771.58

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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.