Home / 786,537.18-1,085,428.89-447,007.86

Finding the Fourth Proportional to 786,537.18, 1,085,428.89 and 447,007.86

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Solution

The fourth proportional to 786,537.18, 1,085,428.89 and 447,007.86 is: 616,875.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,537.18 : 1,085,428.89 = 447,007.86 : x
  2. Step 2: Convert to fraction form
    786,537.18/1,085,428.89 = 447,007.86/x
  3. Step 3: Cross multiply
    786,537.18x = 1,085,428.89 × 447,007.86
  4. Step 4: Simplify right side
    786,537.18x = 485,195,245,301.08
  5. Step 5: Solve for x
    x = 485,195,245,301.08/786,537.18
  6. Step 6: Final answer
    x = 616,875.16

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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.