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Finding the Fourth Proportional to 578,699.63, 798,596.80 and 320,575.78

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Solution

The fourth proportional to 578,699.63, 798,596.80 and 320,575.78 is: 442,389.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,699.63 : 798,596.80 = 320,575.78 : x
  2. Step 2: Convert to fraction form
    578,699.63/798,596.80 = 320,575.78/x
  3. Step 3: Cross multiply
    578,699.63x = 798,596.80 × 320,575.78
  4. Step 4: Simplify right side
    578,699.63x = 256,010,788,072.52
  5. Step 5: Solve for x
    x = 256,010,788,072.52/578,699.63
  6. Step 6: Final answer
    x = 442,389.76

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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.