Home / 717,814.68-990,628.38-395,524.70

Finding the Fourth Proportional to 717,814.68, 990,628.38 and 395,524.70

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Solution

The fourth proportional to 717,814.68, 990,628.38 and 395,524.70 is: 545,848.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,814.68 : 990,628.38 = 395,524.70 : x
  2. Step 2: Convert to fraction form
    717,814.68/990,628.38 = 395,524.70/x
  3. Step 3: Cross multiply
    717,814.68x = 990,628.38 × 395,524.70
  4. Step 4: Simplify right side
    717,814.68x = 391,817,992,810.99
  5. Step 5: Solve for x
    x = 391,817,992,810.99/717,814.68
  6. Step 6: Final answer
    x = 545,848.40

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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.