Home / 1,247,815.55-1,721,985.45-674,855.72

Finding the Fourth Proportional to 1,247,815.55, 1,721,985.45 and 674,855.72

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Solution

The fourth proportional to 1,247,815.55, 1,721,985.45 and 674,855.72 is: 931,300.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,815.55 : 1,721,985.45 = 674,855.72 : x
  2. Step 2: Convert to fraction form
    1,247,815.55/1,721,985.45 = 674,855.72/x
  3. Step 3: Cross multiply
    1,247,815.55x = 1,721,985.45 × 674,855.72
  4. Step 4: Simplify right side
    1,247,815.55x = 1,162,091,730,689.27
  5. Step 5: Solve for x
    x = 1,162,091,730,689.27/1,247,815.55
  6. Step 6: Final answer
    x = 931,300.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.