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Finding the Fourth Proportional to 554,422.40, 830,078.40 and 538,870.40

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Solution

The fourth proportional to 554,422.40, 830,078.40 and 538,870.40 is: 806,794.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,422.40 : 830,078.40 = 538,870.40 : x
  2. Step 2: Convert to fraction form
    554,422.40/830,078.40 = 538,870.40/x
  3. Step 3: Cross multiply
    554,422.40x = 830,078.40 × 538,870.40
  4. Step 4: Simplify right side
    554,422.40x = 447,304,679,439.36
  5. Step 5: Solve for x
    x = 447,304,679,439.36/554,422.40
  6. Step 6: Final answer
    x = 806,794.02

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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.