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Finding the Fourth Proportional to 621,368.98, 932,043.94 and 279,570.98

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Solution

The fourth proportional to 621,368.98, 932,043.94 and 279,570.98 is: 419,352.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,368.98 : 932,043.94 = 279,570.98 : x
  2. Step 2: Convert to fraction form
    621,368.98/932,043.94 = 279,570.98/x
  3. Step 3: Cross multiply
    621,368.98x = 932,043.94 × 279,570.98
  4. Step 4: Simplify right side
    621,368.98x = 260,572,437,708.86
  5. Step 5: Solve for x
    x = 260,572,437,708.86/621,368.98
  6. Step 6: Final answer
    x = 419,352.18

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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.