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Finding the Fourth Proportional to 502,567.78, 693,312.33 and 308,799.58

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Solution

The fourth proportional to 502,567.78, 693,312.33 and 308,799.58 is: 426,001.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,567.78 : 693,312.33 = 308,799.58 : x
  2. Step 2: Convert to fraction form
    502,567.78/693,312.33 = 308,799.58/x
  3. Step 3: Cross multiply
    502,567.78x = 693,312.33 × 308,799.58
  4. Step 4: Simplify right side
    502,567.78x = 214,094,556,312.82
  5. Step 5: Solve for x
    x = 214,094,556,312.82/502,567.78
  6. Step 6: Final answer
    x = 426,001.36

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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.