Home / 1,385,838.83-2,078,763.06-426,287.92

Finding the Fourth Proportional to 1,385,838.83, 2,078,763.06 and 426,287.92

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Solution

The fourth proportional to 1,385,838.83, 2,078,763.06 and 426,287.92 is: 639,433.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,838.83 : 2,078,763.06 = 426,287.92 : x
  2. Step 2: Convert to fraction form
    1,385,838.83/2,078,763.06 = 426,287.92/x
  3. Step 3: Cross multiply
    1,385,838.83x = 2,078,763.06 × 426,287.92
  4. Step 4: Simplify right side
    1,385,838.83x = 886,151,581,020.24
  5. Step 5: Solve for x
    x = 886,151,581,020.24/1,385,838.83
  6. Step 6: Final answer
    x = 639,433.36

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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.