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Finding the Fourth Proportional to 479,976.76, 662,408.96 and 265,140.28

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Solution

The fourth proportional to 479,976.76, 662,408.96 and 265,140.28 is: 365,916.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,976.76 : 662,408.96 = 265,140.28 : x
  2. Step 2: Convert to fraction form
    479,976.76/662,408.96 = 265,140.28/x
  3. Step 3: Cross multiply
    479,976.76x = 662,408.96 × 265,140.28
  4. Step 4: Simplify right side
    479,976.76x = 175,631,297,128.91
  5. Step 5: Solve for x
    x = 175,631,297,128.91/479,976.76
  6. Step 6: Final answer
    x = 365,916.25

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1.5x scale

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.