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Finding the Fourth Proportional to 585,662.50, 808,214.79 and 317,390.50

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Solution

The fourth proportional to 585,662.50, 808,214.79 and 317,390.50 is: 437,999.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,662.50 : 808,214.79 = 317,390.50 : x
  2. Step 2: Convert to fraction form
    585,662.50/808,214.79 = 317,390.50/x
  3. Step 3: Cross multiply
    585,662.50x = 808,214.79 × 317,390.50
  4. Step 4: Simplify right side
    585,662.50x = 256,519,696,305.50
  5. Step 5: Solve for x
    x = 256,519,696,305.50/585,662.50
  6. Step 6: Final answer
    x = 437,999.18

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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.