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Finding the Fourth Proportional to 624,460.79, 861,776.75 and 382,696.65

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Solution

The fourth proportional to 624,460.79, 861,776.75 and 382,696.65 is: 528,134.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,460.79 : 861,776.75 = 382,696.65 : x
  2. Step 2: Convert to fraction form
    624,460.79/861,776.75 = 382,696.65/x
  3. Step 3: Cross multiply
    624,460.79x = 861,776.75 × 382,696.65
  4. Step 4: Simplify right side
    624,460.79x = 329,799,070,964.00
  5. Step 5: Solve for x
    x = 329,799,070,964.00/624,460.79
  6. Step 6: Final answer
    x = 528,134.16

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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.