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Finding the Fourth Proportional to 615,820.11, 849,830.07 and 343,885.80

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Solution

The fourth proportional to 615,820.11, 849,830.07 and 343,885.80 is: 474,561.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,820.11 : 849,830.07 = 343,885.80 : x
  2. Step 2: Convert to fraction form
    615,820.11/849,830.07 = 343,885.80/x
  3. Step 3: Cross multiply
    615,820.11x = 849,830.07 × 343,885.80
  4. Step 4: Simplify right side
    615,820.11x = 292,244,493,486.01
  5. Step 5: Solve for x
    x = 292,244,493,486.01/615,820.11
  6. Step 6: Final answer
    x = 474,561.46

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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.