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Finding the Fourth Proportional to 664,769.84, 917,578.68 and 463,630.64

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Solution

The fourth proportional to 664,769.84, 917,578.68 and 463,630.64 is: 639,947.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,769.84 : 917,578.68 = 463,630.64 : x
  2. Step 2: Convert to fraction form
    664,769.84/917,578.68 = 463,630.64/x
  3. Step 3: Cross multiply
    664,769.84x = 917,578.68 × 463,630.64
  4. Step 4: Simplify right side
    664,769.84x = 425,417,590,658.76
  5. Step 5: Solve for x
    x = 425,417,590,658.76/664,769.84
  6. Step 6: Final answer
    x = 639,947.19

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Double scale
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Similar ratio
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1.5x scale

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.