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Finding the Fourth Proportional to 578,650.34, 798,509.73 and 320,509.88

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Solution

The fourth proportional to 578,650.34, 798,509.73 and 320,509.88 is: 442,288.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,650.34 : 798,509.73 = 320,509.88 : x
  2. Step 2: Convert to fraction form
    578,650.34/798,509.73 = 320,509.88/x
  3. Step 3: Cross multiply
    578,650.34x = 798,509.73 × 320,509.88
  4. Step 4: Simplify right side
    578,650.34x = 255,930,252,146.03
  5. Step 5: Solve for x
    x = 255,930,252,146.03/578,650.34
  6. Step 6: Final answer
    x = 442,288.26

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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.