Home / 1,107,640.11-1,528,827.73-721,417.93

Finding the Fourth Proportional to 1,107,640.11, 1,528,827.73 and 721,417.93

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Solution

The fourth proportional to 1,107,640.11, 1,528,827.73 and 721,417.93 is: 995,741.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,640.11 : 1,528,827.73 = 721,417.93 : x
  2. Step 2: Convert to fraction form
    1,107,640.11/1,528,827.73 = 721,417.93/x
  3. Step 3: Cross multiply
    1,107,640.11x = 1,528,827.73 × 721,417.93
  4. Step 4: Simplify right side
    1,107,640.11x = 1,102,923,736,303.20
  5. Step 5: Solve for x
    x = 1,102,923,736,303.20/1,107,640.11
  6. Step 6: Final answer
    x = 995,741.96

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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.