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Finding the Fourth Proportional to 479,746.50, 662,108.49 and 278,542.50

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Solution

The fourth proportional to 479,746.50, 662,108.49 and 278,542.50 is: 384,422.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,746.50 : 662,108.49 = 278,542.50 : x
  2. Step 2: Convert to fraction form
    479,746.50/662,108.49 = 278,542.50/x
  3. Step 3: Cross multiply
    479,746.50x = 662,108.49 × 278,542.50
  4. Step 4: Simplify right side
    479,746.50x = 184,425,354,075.83
  5. Step 5: Solve for x
    x = 184,425,354,075.83/479,746.50
  6. Step 6: Final answer
    x = 384,422.51

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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.