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Finding the Fourth Proportional to 502,970.28, 695,926.70 and 438,573.80

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Solution

The fourth proportional to 502,970.28, 695,926.70 and 438,573.80 is: 606,825.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,970.28 : 695,926.70 = 438,573.80 : x
  2. Step 2: Convert to fraction form
    502,970.28/695,926.70 = 438,573.80/x
  3. Step 3: Cross multiply
    502,970.28x = 695,926.70 × 438,573.80
  4. Step 4: Simplify right side
    502,970.28x = 305,215,217,340.46
  5. Step 5: Solve for x
    x = 305,215,217,340.46/502,970.28
  6. Step 6: Final answer
    x = 606,825.55

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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.