Home / 1,239,000.69-1,709,924.03-687,768.29

Finding the Fourth Proportional to 1,239,000.69, 1,709,924.03 and 687,768.29

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Solution

The fourth proportional to 1,239,000.69, 1,709,924.03 and 687,768.29 is: 949,177.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,000.69 : 1,709,924.03 = 687,768.29 : x
  2. Step 2: Convert to fraction form
    1,239,000.69/1,709,924.03 = 687,768.29/x
  3. Step 3: Cross multiply
    1,239,000.69x = 1,709,924.03 × 687,768.29
  4. Step 4: Simplify right side
    1,239,000.69x = 1,176,031,514,154.55
  5. Step 5: Solve for x
    x = 1,176,031,514,154.55/1,239,000.69
  6. Step 6: Final answer
    x = 949,177.45

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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.