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Finding the Fourth Proportional to 553,780.20, 830,670.30 and 341,203.80

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Solution

The fourth proportional to 553,780.20, 830,670.30 and 341,203.80 is: 511,805.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,780.20 : 830,670.30 = 341,203.80 : x
  2. Step 2: Convert to fraction form
    553,780.20/830,670.30 = 341,203.80/x
  3. Step 3: Cross multiply
    553,780.20x = 830,670.30 × 341,203.80
  4. Step 4: Simplify right side
    553,780.20x = 283,427,862,907.14
  5. Step 5: Solve for x
    x = 283,427,862,907.14/553,780.20
  6. Step 6: Final answer
    x = 511,805.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.