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Finding the Fourth Proportional to 578,699.88, 798,597.15 and 320,576.03

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Solution

The fourth proportional to 578,699.88, 798,597.15 and 320,576.03 is: 442,390.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,699.88 : 798,597.15 = 320,576.03 : x
  2. Step 2: Convert to fraction form
    578,699.88/798,597.15 = 320,576.03/x
  3. Step 3: Cross multiply
    578,699.88x = 798,597.15 × 320,576.03
  4. Step 4: Simplify right side
    578,699.88x = 256,011,099,923.33
  5. Step 5: Solve for x
    x = 256,011,099,923.33/578,699.88
  6. Step 6: Final answer
    x = 442,390.10

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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.