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Finding the Fourth Proportional to 661,300.60, 992,231.70 and 361,430.86

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Solution

The fourth proportional to 661,300.60, 992,231.70 and 361,430.86 is: 542,299.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,300.60 : 992,231.70 = 361,430.86 : x
  2. Step 2: Convert to fraction form
    661,300.60/992,231.70 = 361,430.86/x
  3. Step 3: Cross multiply
    661,300.60x = 992,231.70 × 361,430.86
  4. Step 4: Simplify right side
    661,300.60x = 358,623,156,650.26
  5. Step 5: Solve for x
    x = 358,623,156,650.26/661,300.60
  6. Step 6: Final answer
    x = 542,299.76

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1.5x scale

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.