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Finding the Fourth Proportional to 578,699.12, 798,596.11 and 320,575.28

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Solution

The fourth proportional to 578,699.12, 798,596.11 and 320,575.28 is: 442,389.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,699.12 : 798,596.11 = 320,575.28 : x
  2. Step 2: Convert to fraction form
    578,699.12/798,596.11 = 320,575.28/x
  3. Step 3: Cross multiply
    578,699.12x = 798,596.11 × 320,575.28
  4. Step 4: Simplify right side
    578,699.12x = 256,010,167,977.90
  5. Step 5: Solve for x
    x = 256,010,167,977.90/578,699.12
  6. Step 6: Final answer
    x = 442,389.07

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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.