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Finding the Fourth Proportional to 576,072.60, 864,368.10 and 276,437.40

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Solution

The fourth proportional to 576,072.60, 864,368.10 and 276,437.40 is: 414,780.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,072.60 : 864,368.10 = 276,437.40 : x
  2. Step 2: Convert to fraction form
    576,072.60/864,368.10 = 276,437.40/x
  3. Step 3: Cross multiply
    576,072.60x = 864,368.10 × 276,437.40
  4. Step 4: Simplify right side
    576,072.60x = 238,943,670,206.94
  5. Step 5: Solve for x
    x = 238,943,670,206.94/576,072.60
  6. Step 6: Final answer
    x = 414,780.48

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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.