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Finding the Fourth Proportional to 526,722.87, 726,875.23 and 285,009.73

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Solution

The fourth proportional to 526,722.87, 726,875.23 and 285,009.73 is: 393,312.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,722.87 : 726,875.23 = 285,009.73 : x
  2. Step 2: Convert to fraction form
    526,722.87/726,875.23 = 285,009.73/x
  3. Step 3: Cross multiply
    526,722.87x = 726,875.23 × 285,009.73
  4. Step 4: Simplify right side
    526,722.87x = 207,166,513,045.99
  5. Step 5: Solve for x
    x = 207,166,513,045.99/526,722.87
  6. Step 6: Final answer
    x = 393,312.17

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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.