Home / 688,057.68-1,031,214.60-388,706.91

Finding the Fourth Proportional to 688,057.68, 1,031,214.60 and 388,706.91

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Solution

The fourth proportional to 688,057.68, 1,031,214.60 and 388,706.91 is: 582,567.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,057.68 : 1,031,214.60 = 388,706.91 : x
  2. Step 2: Convert to fraction form
    688,057.68/1,031,214.60 = 388,706.91/x
  3. Step 3: Cross multiply
    688,057.68x = 1,031,214.60 × 388,706.91
  4. Step 4: Simplify right side
    688,057.68x = 400,840,240,712.89
  5. Step 5: Solve for x
    x = 400,840,240,712.89/688,057.68
  6. Step 6: Final answer
    x = 582,567.79

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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.