Home / 1,230,287.43-1,697,794.31-686,390.86

Finding the Fourth Proportional to 1,230,287.43, 1,697,794.31 and 686,390.86

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Solution

The fourth proportional to 1,230,287.43, 1,697,794.31 and 686,390.86 is: 947,218.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,287.43 : 1,697,794.31 = 686,390.86 : x
  2. Step 2: Convert to fraction form
    1,230,287.43/1,697,794.31 = 686,390.86/x
  3. Step 3: Cross multiply
    1,230,287.43x = 1,697,794.31 × 686,390.86
  4. Step 4: Simplify right side
    1,230,287.43x = 1,165,350,484,623.08
  5. Step 5: Solve for x
    x = 1,165,350,484,623.08/1,230,287.43
  6. Step 6: Final answer
    x = 947,218.07

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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.