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Finding the Fourth Proportional to 903,276, 1,246,518.98 and 521,302.78

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Solution

The fourth proportional to 903,276, 1,246,518.98 and 521,302.78 is: 719,396.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,276 : 1,246,518.98 = 521,302.78 : x
  2. Step 2: Convert to fraction form
    903,276/1,246,518.98 = 521,302.78/x
  3. Step 3: Cross multiply
    903,276x = 1,246,518.98 × 521,302.78
  4. Step 4: Simplify right side
    903,276x = 649,813,809,596.76
  5. Step 5: Solve for x
    x = 649,813,809,596.76/903,276
  6. Step 6: Final answer
    x = 719,396.74

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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.