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Finding the Fourth Proportional to 661,955.76, 993,555.60 and 346,638.96

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Solution

The fourth proportional to 661,955.76, 993,555.60 and 346,638.96 is: 520,284.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,955.76 : 993,555.60 = 346,638.96 : x
  2. Step 2: Convert to fraction form
    661,955.76/993,555.60 = 346,638.96/x
  3. Step 3: Cross multiply
    661,955.76x = 993,555.60 × 346,638.96
  4. Step 4: Simplify right side
    661,955.76x = 344,405,079,886.18
  5. Step 5: Solve for x
    x = 344,405,079,886.18/661,955.76
  6. Step 6: Final answer
    x = 520,284.13

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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.