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Finding the Fourth Proportional to 704,578.55, 972,317.05 and 382,288.56

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Solution

The fourth proportional to 704,578.55, 972,317.05 and 382,288.56 is: 527,557.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,578.55 : 972,317.05 = 382,288.56 : x
  2. Step 2: Convert to fraction form
    704,578.55/972,317.05 = 382,288.56/x
  3. Step 3: Cross multiply
    704,578.55x = 972,317.05 × 382,288.56
  4. Step 4: Simplify right side
    704,578.55x = 371,705,678,134.92
  5. Step 5: Solve for x
    x = 371,705,678,134.92/704,578.55
  6. Step 6: Final answer
    x = 527,557.47

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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.