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Finding the Fourth Proportional to 664,503.12, 917,011.08 and 362,696.40

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Solution

The fourth proportional to 664,503.12, 917,011.08 and 362,696.40 is: 500,519.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,503.12 : 917,011.08 = 362,696.40 : x
  2. Step 2: Convert to fraction form
    664,503.12/917,011.08 = 362,696.40/x
  3. Step 3: Cross multiply
    664,503.12x = 917,011.08 × 362,696.40
  4. Step 4: Simplify right side
    664,503.12x = 332,596,617,476.11
  5. Step 5: Solve for x
    x = 332,596,617,476.11/664,503.12
  6. Step 6: Final answer
    x = 500,519.27

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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.