Home / 686,151.81-1,029,230.15-485,866.35

Finding the Fourth Proportional to 686,151.81, 1,029,230.15 and 485,866.35

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Solution

The fourth proportional to 686,151.81, 1,029,230.15 and 485,866.35 is: 728,801.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,151.81 : 1,029,230.15 = 485,866.35 : x
  2. Step 2: Convert to fraction form
    686,151.81/1,029,230.15 = 485,866.35/x
  3. Step 3: Cross multiply
    686,151.81x = 1,029,230.15 × 485,866.35
  4. Step 4: Simplify right side
    686,151.81x = 500,068,293,861.12
  5. Step 5: Solve for x
    x = 500,068,293,861.12/686,151.81
  6. Step 6: Final answer
    x = 728,801.25

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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.