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Finding the Fourth Proportional to 537,792.40, 806,688.60 and 411,821.20

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Solution

The fourth proportional to 537,792.40, 806,688.60 and 411,821.20 is: 617,731.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,792.40 : 806,688.60 = 411,821.20 : x
  2. Step 2: Convert to fraction form
    537,792.40/806,688.60 = 411,821.20/x
  3. Step 3: Cross multiply
    537,792.40x = 806,688.60 × 411,821.20
  4. Step 4: Simplify right side
    537,792.40x = 332,211,467,278.32
  5. Step 5: Solve for x
    x = 332,211,467,278.32/537,792.40
  6. Step 6: Final answer
    x = 617,731.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.