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Finding the Fourth Proportional to 641,739.94, 885,693.78 and 369,755.72

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Solution

The fourth proportional to 641,739.94, 885,693.78 and 369,755.72 is: 510,316.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,739.94 : 885,693.78 = 369,755.72 : x
  2. Step 2: Convert to fraction form
    641,739.94/885,693.78 = 369,755.72/x
  3. Step 3: Cross multiply
    641,739.94x = 885,693.78 × 369,755.72
  4. Step 4: Simplify right side
    641,739.94x = 327,490,341,323.42
  5. Step 5: Solve for x
    x = 327,490,341,323.42/641,739.94
  6. Step 6: Final answer
    x = 510,316.28

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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.