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Finding the Fourth Proportional to 443,580.21, 611,503.34 and 316,034.37

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Solution

The fourth proportional to 443,580.21, 611,503.34 and 316,034.37 is: 435,673.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,580.21 : 611,503.34 = 316,034.37 : x
  2. Step 2: Convert to fraction form
    443,580.21/611,503.34 = 316,034.37/x
  3. Step 3: Cross multiply
    443,580.21x = 611,503.34 × 316,034.37
  4. Step 4: Simplify right side
    443,580.21x = 193,256,072,809.80
  5. Step 5: Solve for x
    x = 193,256,072,809.80/443,580.21
  6. Step 6: Final answer
    x = 435,673.34

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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.