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Finding the Fourth Proportional to 554,381.40, 830,016.90 and 538,829.40

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Solution

The fourth proportional to 554,381.40, 830,016.90 and 538,829.40 is: 806,732.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,381.40 : 830,016.90 = 538,829.40 : x
  2. Step 2: Convert to fraction form
    554,381.40/830,016.90 = 538,829.40/x
  3. Step 3: Cross multiply
    554,381.40x = 830,016.90 × 538,829.40
  4. Step 4: Simplify right side
    554,381.40x = 447,237,508,216.86
  5. Step 5: Solve for x
    x = 447,237,508,216.86/554,381.40
  6. Step 6: Final answer
    x = 806,732.53

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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.