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Finding the Fourth Proportional to 672,682.90, 1,009,413.15 and 252,001.30

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Solution

The fourth proportional to 672,682.90, 1,009,413.15 and 252,001.30 is: 378,147.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,682.90 : 1,009,413.15 = 252,001.30 : x
  2. Step 2: Convert to fraction form
    672,682.90/1,009,413.15 = 252,001.30/x
  3. Step 3: Cross multiply
    672,682.90x = 1,009,413.15 × 252,001.30
  4. Step 4: Simplify right side
    672,682.90x = 254,373,426,037.10
  5. Step 5: Solve for x
    x = 254,373,426,037.10/672,682.90
  6. Step 6: Final answer
    x = 378,147.60

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Double scale
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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.