Home / 2,138,798.40-3,208,200.03-642,890.40

Finding the Fourth Proportional to 2,138,798.40, 3,208,200.03 and 642,890.40

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Solution

The fourth proportional to 2,138,798.40, 3,208,200.03 and 642,890.40 is: 964,336.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138,798.40 : 3,208,200.03 = 642,890.40 : x
  2. Step 2: Convert to fraction form
    2,138,798.40/3,208,200.03 = 642,890.40/x
  3. Step 3: Cross multiply
    2,138,798.40x = 3,208,200.03 × 642,890.40
  4. Step 4: Simplify right side
    2,138,798.40x = 2,062,521,000,566.71
  5. Step 5: Solve for x
    x = 2,062,521,000,566.71/2,138,798.40
  6. Step 6: Final answer
    x = 964,336.33

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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.