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Finding the Fourth Proportional to 717,500.34, 990,113.94 and 395,203.50

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Solution

The fourth proportional to 717,500.34, 990,113.94 and 395,203.50 is: 545,360.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,500.34 : 990,113.94 = 395,203.50 : x
  2. Step 2: Convert to fraction form
    717,500.34/990,113.94 = 395,203.50/x
  3. Step 3: Cross multiply
    717,500.34x = 990,113.94 × 395,203.50
  4. Step 4: Simplify right side
    717,500.34x = 391,296,494,486.79
  5. Step 5: Solve for x
    x = 391,296,494,486.79/717,500.34
  6. Step 6: Final answer
    x = 545,360.71

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1.5x scale

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.