Home / 1,107,640.10-1,528,827.72-721,417.94

Finding the Fourth Proportional to 1,107,640.10, 1,528,827.72 and 721,417.94

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Solution

The fourth proportional to 1,107,640.10, 1,528,827.72 and 721,417.94 is: 995,741.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,640.10 : 1,528,827.72 = 721,417.94 : x
  2. Step 2: Convert to fraction form
    1,107,640.10/1,528,827.72 = 721,417.94/x
  3. Step 3: Cross multiply
    1,107,640.10x = 1,528,827.72 × 721,417.94
  4. Step 4: Simplify right side
    1,107,640.10x = 1,102,923,744,377.30
  5. Step 5: Solve for x
    x = 1,102,923,744,377.30/1,107,640.10
  6. Step 6: Final answer
    x = 995,741.98

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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.