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Finding the Fourth Proportional to 926,412, 1,379,495.20 and 892,363.20

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Solution

The fourth proportional to 926,412, 1,379,495.20 and 892,363.20 is: 1,328,794.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,412 : 1,379,495.20 = 892,363.20 : x
  2. Step 2: Convert to fraction form
    926,412/1,379,495.20 = 892,363.20/x
  3. Step 3: Cross multiply
    926,412x = 1,379,495.20 × 892,363.20
  4. Step 4: Simplify right side
    926,412x = 1,231,010,751,056.64
  5. Step 5: Solve for x
    x = 1,231,010,751,056.64/926,412
  6. Step 6: Final answer
    x = 1,328,794.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.