Home / 783,999.10-1,175,998.65-285,298.30

Finding the Fourth Proportional to 783,999.10, 1,175,998.65 and 285,298.30

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Solution

The fourth proportional to 783,999.10, 1,175,998.65 and 285,298.30 is: 427,947.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,999.10 : 1,175,998.65 = 285,298.30 : x
  2. Step 2: Convert to fraction form
    783,999.10/1,175,998.65 = 285,298.30/x
  3. Step 3: Cross multiply
    783,999.10x = 1,175,998.65 × 285,298.30
  4. Step 4: Simplify right side
    783,999.10x = 335,510,415,647.30
  5. Step 5: Solve for x
    x = 335,510,415,647.30/783,999.10
  6. Step 6: Final answer
    x = 427,947.45

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Double scale
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Similar ratio
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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.