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Finding the Fourth Proportional to 658,700.45, 909,007.22 and 356,894.45

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Solution

The fourth proportional to 658,700.45, 909,007.22 and 356,894.45 is: 492,514.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,700.45 : 909,007.22 = 356,894.45 : x
  2. Step 2: Convert to fraction form
    658,700.45/909,007.22 = 356,894.45/x
  3. Step 3: Cross multiply
    658,700.45x = 909,007.22 × 356,894.45
  4. Step 4: Simplify right side
    658,700.45x = 324,419,625,498.42
  5. Step 5: Solve for x
    x = 324,419,625,498.42/658,700.45
  6. Step 6: Final answer
    x = 492,514.66

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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.