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Finding the Fourth Proportional to 502,438.95, 693,357.89 and 276,079.59

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Solution

The fourth proportional to 502,438.95, 693,357.89 and 276,079.59 is: 380,985.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,438.95 : 693,357.89 = 276,079.59 : x
  2. Step 2: Convert to fraction form
    502,438.95/693,357.89 = 276,079.59/x
  3. Step 3: Cross multiply
    502,438.95x = 693,357.89 × 276,079.59
  4. Step 4: Simplify right side
    502,438.95x = 191,421,960,614.07
  5. Step 5: Solve for x
    x = 191,421,960,614.07/502,438.95
  6. Step 6: Final answer
    x = 380,985.51

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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.