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Finding the Fourth Proportional to 658,722.94, 909,038.30 and 356,916.94

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Solution

The fourth proportional to 658,722.94, 909,038.30 and 356,916.94 is: 492,545.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,722.94 : 909,038.30 = 356,916.94 : x
  2. Step 2: Convert to fraction form
    658,722.94/909,038.30 = 356,916.94/x
  3. Step 3: Cross multiply
    658,722.94x = 909,038.30 × 356,916.94
  4. Step 4: Simplify right side
    658,722.94x = 324,451,164,321.62
  5. Step 5: Solve for x
    x = 324,451,164,321.62/658,722.94
  6. Step 6: Final answer
    x = 492,545.72

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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.