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Finding the Fourth Proportional to 453,978.73, 626,444.29 and 279,521.23

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Solution

The fourth proportional to 453,978.73, 626,444.29 and 279,521.23 is: 385,710.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,978.73 : 626,444.29 = 279,521.23 : x
  2. Step 2: Convert to fraction form
    453,978.73/626,444.29 = 279,521.23/x
  3. Step 3: Cross multiply
    453,978.73x = 626,444.29 × 279,521.23
  4. Step 4: Simplify right side
    453,978.73x = 175,104,477,491.59
  5. Step 5: Solve for x
    x = 175,104,477,491.59/453,978.73
  6. Step 6: Final answer
    x = 385,710.75

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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.