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Finding the Fourth Proportional to 674,354.96, 930,572.52 and 387,879.86

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Solution

The fourth proportional to 674,354.96, 930,572.52 and 387,879.86 is: 535,252.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,354.96 : 930,572.52 = 387,879.86 : x
  2. Step 2: Convert to fraction form
    674,354.96/930,572.52 = 387,879.86/x
  3. Step 3: Cross multiply
    674,354.96x = 930,572.52 × 387,879.86
  4. Step 4: Simplify right side
    674,354.96x = 360,950,338,777.45
  5. Step 5: Solve for x
    x = 360,950,338,777.45/674,354.96
  6. Step 6: Final answer
    x = 535,252.74

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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.