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Finding the Fourth Proportional to 554,387.40, 830,025.90 and 538,835.40

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Solution

The fourth proportional to 554,387.40, 830,025.90 and 538,835.40 is: 806,741.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,387.40 : 830,025.90 = 538,835.40 : x
  2. Step 2: Convert to fraction form
    554,387.40/830,025.90 = 538,835.40/x
  3. Step 3: Cross multiply
    554,387.40x = 830,025.90 × 538,835.40
  4. Step 4: Simplify right side
    554,387.40x = 447,247,337,836.86
  5. Step 5: Solve for x
    x = 447,247,337,836.86/554,387.40
  6. Step 6: Final answer
    x = 806,741.53

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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.