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Finding the Fourth Proportional to 776,683.80, 1,165,064.10 and 403,435.80

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Solution

The fourth proportional to 776,683.80, 1,165,064.10 and 403,435.80 is: 605,173.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,683.80 : 1,165,064.10 = 403,435.80 : x
  2. Step 2: Convert to fraction form
    776,683.80/1,165,064.10 = 403,435.80/x
  3. Step 3: Cross multiply
    776,683.80x = 1,165,064.10 × 403,435.80
  4. Step 4: Simplify right side
    776,683.80x = 470,028,567,234.78
  5. Step 5: Solve for x
    x = 470,028,567,234.78/776,683.80
  6. Step 6: Final answer
    x = 605,173.65

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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.