Home / 727,186.29-1,088,122.19-427,807.86

Finding the Fourth Proportional to 727,186.29, 1,088,122.19 and 427,807.86

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Solution

The fourth proportional to 727,186.29, 1,088,122.19 and 427,807.86 is: 640,148.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,186.29 : 1,088,122.19 = 427,807.86 : x
  2. Step 2: Convert to fraction form
    727,186.29/1,088,122.19 = 427,807.86/x
  3. Step 3: Cross multiply
    727,186.29x = 1,088,122.19 × 427,807.86
  4. Step 4: Simplify right side
    727,186.29x = 465,507,219,302.92
  5. Step 5: Solve for x
    x = 465,507,219,302.92/727,186.29
  6. Step 6: Final answer
    x = 640,148.51

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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.