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Finding the Fourth Proportional to 571,686.48, 788,915.49 and 353,837.34

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Solution

The fourth proportional to 571,686.48, 788,915.49 and 353,837.34 is: 488,288.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,686.48 : 788,915.49 = 353,837.34 : x
  2. Step 2: Convert to fraction form
    571,686.48/788,915.49 = 353,837.34/x
  3. Step 3: Cross multiply
    571,686.48x = 788,915.49 × 353,837.34
  4. Step 4: Simplify right side
    571,686.48x = 279,147,758,466.40
  5. Step 5: Solve for x
    x = 279,147,758,466.40/571,686.48
  6. Step 6: Final answer
    x = 488,288.19

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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.