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Finding the Fourth Proportional to 491,810.40, 737,254.80 and 385,135.20

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Solution

The fourth proportional to 491,810.40, 737,254.80 and 385,135.20 is: 577,341.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,810.40 : 737,254.80 = 385,135.20 : x
  2. Step 2: Convert to fraction form
    491,810.40/737,254.80 = 385,135.20/x
  3. Step 3: Cross multiply
    491,810.40x = 737,254.80 × 385,135.20
  4. Step 4: Simplify right side
    491,810.40x = 283,942,774,848.96
  5. Step 5: Solve for x
    x = 283,942,774,848.96/491,810.40
  6. Step 6: Final answer
    x = 577,341.95

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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.