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Finding the Fourth Proportional to 511,379.88, 705,411.60 and 320,061.12

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Solution

The fourth proportional to 511,379.88, 705,411.60 and 320,061.12 is: 441,501.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,379.88 : 705,411.60 = 320,061.12 : x
  2. Step 2: Convert to fraction form
    511,379.88/705,411.60 = 320,061.12/x
  3. Step 3: Cross multiply
    511,379.88x = 705,411.60 × 320,061.12
  4. Step 4: Simplify right side
    511,379.88x = 225,774,826,756.99
  5. Step 5: Solve for x
    x = 225,774,826,756.99/511,379.88
  6. Step 6: Final answer
    x = 441,501.19

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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.