Home / 913,115.20-1,369,672.80-864,126.40

Finding the Fourth Proportional to 913,115.20, 1,369,672.80 and 864,126.40

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Solution

The fourth proportional to 913,115.20, 1,369,672.80 and 864,126.40 is: 1,296,189.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,115.20 : 1,369,672.80 = 864,126.40 : x
  2. Step 2: Convert to fraction form
    913,115.20/1,369,672.80 = 864,126.40/x
  3. Step 3: Cross multiply
    913,115.20x = 1,369,672.80 × 864,126.40
  4. Step 4: Simplify right side
    913,115.20x = 1,183,570,425,841.92
  5. Step 5: Solve for x
    x = 1,183,570,425,841.92/913,115.20
  6. Step 6: Final answer
    x = 1,296,189.60

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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.