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Finding the Fourth Proportional to 509,495.76, 701,888.94 and 356,247.20

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Solution

The fourth proportional to 509,495.76, 701,888.94 and 356,247.20 is: 490,771.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,495.76 : 701,888.94 = 356,247.20 : x
  2. Step 2: Convert to fraction form
    509,495.76/701,888.94 = 356,247.20/x
  3. Step 3: Cross multiply
    509,495.76x = 701,888.94 × 356,247.20
  4. Step 4: Simplify right side
    509,495.76x = 250,045,966,076.52
  5. Step 5: Solve for x
    x = 250,045,966,076.52/509,495.76
  6. Step 6: Final answer
    x = 490,771.44

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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.