Home / 1,221,740.52-1,686,204.24-678,051

Finding the Fourth Proportional to 1,221,740.52, 1,686,204.24 and 678,051

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Solution

The fourth proportional to 1,221,740.52, 1,686,204.24 and 678,051 is: 935,822.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,740.52 : 1,686,204.24 = 678,051 : x
  2. Step 2: Convert to fraction form
    1,221,740.52/1,686,204.24 = 678,051/x
  3. Step 3: Cross multiply
    1,221,740.52x = 1,686,204.24 × 678,051
  4. Step 4: Simplify right side
    1,221,740.52x = 1,143,332,471,136.24
  5. Step 5: Solve for x
    x = 1,143,332,471,136.24/1,221,740.52
  6. Step 6: Final answer
    x = 935,822.67

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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.