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Finding the Fourth Proportional to 10,379,894.40, 15,569,841.60 and 9,792,028.80

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Solution

The fourth proportional to 10,379,894.40, 15,569,841.60 and 9,792,028.80 is: 14,688,043.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,379,894.40 : 15,569,841.60 = 9,792,028.80 : x
  2. Step 2: Convert to fraction form
    10,379,894.40/15,569,841.60 = 9,792,028.80/x
  3. Step 3: Cross multiply
    10,379,894.40x = 15,569,841.60 × 9,792,028.80
  4. Step 4: Simplify right side
    10,379,894.40x = 152,460,337,358,638.09
  5. Step 5: Solve for x
    x = 152,460,337,358,638.09/10,379,894.40
  6. Step 6: Final answer
    x = 14,688,043.20

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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.