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Finding the Fourth Proportional to 508,728, 702,044.64 and 282,368.64

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Solution

The fourth proportional to 508,728, 702,044.64 and 282,368.64 is: 389,668.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,728 : 702,044.64 = 282,368.64 : x
  2. Step 2: Convert to fraction form
    508,728/702,044.64 = 282,368.64/x
  3. Step 3: Cross multiply
    508,728x = 702,044.64 × 282,368.64
  4. Step 4: Simplify right side
    508,728x = 198,235,390,216.09
  5. Step 5: Solve for x
    x = 198,235,390,216.09/508,728
  6. Step 6: Final answer
    x = 389,668.72

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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.