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Finding the Fourth Proportional to 576,047.40, 862,904.70 and 326,437.80

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Solution

The fourth proportional to 576,047.40, 862,904.70 and 326,437.80 is: 488,995.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,047.40 : 862,904.70 = 326,437.80 : x
  2. Step 2: Convert to fraction form
    576,047.40/862,904.70 = 326,437.80/x
  3. Step 3: Cross multiply
    576,047.40x = 862,904.70 × 326,437.80
  4. Step 4: Simplify right side
    576,047.40x = 281,684,711,877.66
  5. Step 5: Solve for x
    x = 281,684,711,877.66/576,047.40
  6. Step 6: Final answer
    x = 488,995.72

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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.