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Finding the Fourth Proportional to 672,683.40, 1,009,413.90 and 252,001.80

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Solution

The fourth proportional to 672,683.40, 1,009,413.90 and 252,001.80 is: 378,148.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,683.40 : 1,009,413.90 = 252,001.80 : x
  2. Step 2: Convert to fraction form
    672,683.40/1,009,413.90 = 252,001.80/x
  3. Step 3: Cross multiply
    672,683.40x = 1,009,413.90 × 252,001.80
  4. Step 4: Simplify right side
    672,683.40x = 254,374,119,745.02
  5. Step 5: Solve for x
    x = 254,374,119,745.02/672,683.40
  6. Step 6: Final answer
    x = 378,148.35

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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.