Home / 1,290,497.45-1,780,875.68-717,532.61

Finding the Fourth Proportional to 1,290,497.45, 1,780,875.68 and 717,532.61

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Solution

The fourth proportional to 1,290,497.45, 1,780,875.68 and 717,532.61 is: 990,188.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,497.45 : 1,780,875.68 = 717,532.61 : x
  2. Step 2: Convert to fraction form
    1,290,497.45/1,780,875.68 = 717,532.61/x
  3. Step 3: Cross multiply
    1,290,497.45x = 1,780,875.68 × 717,532.61
  4. Step 4: Simplify right side
    1,290,497.45x = 1,277,836,362,263.88
  5. Step 5: Solve for x
    x = 1,277,836,362,263.88/1,290,497.45
  6. Step 6: Final answer
    x = 990,188.99

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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.