Home / 739,899.60-1,109,849.40-385,605.60

Finding the Fourth Proportional to 739,899.60, 1,109,849.40 and 385,605.60

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Solution

The fourth proportional to 739,899.60, 1,109,849.40 and 385,605.60 is: 578,408.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,899.60 : 1,109,849.40 = 385,605.60 : x
  2. Step 2: Convert to fraction form
    739,899.60/1,109,849.40 = 385,605.60/x
  3. Step 3: Cross multiply
    739,899.60x = 1,109,849.40 × 385,605.60
  4. Step 4: Simplify right side
    739,899.60x = 427,964,143,796.64
  5. Step 5: Solve for x
    x = 427,964,143,796.64/739,899.60
  6. Step 6: Final answer
    x = 578,408.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.