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Finding the Fourth Proportional to 612,879.13, 845,427.60 and 367,801.21

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Solution

The fourth proportional to 612,879.13, 845,427.60 and 367,801.21 is: 507,358.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,879.13 : 845,427.60 = 367,801.21 : x
  2. Step 2: Convert to fraction form
    612,879.13/845,427.60 = 367,801.21/x
  3. Step 3: Cross multiply
    612,879.13x = 845,427.60 × 367,801.21
  4. Step 4: Simplify right side
    612,879.13x = 310,949,290,020.26
  5. Step 5: Solve for x
    x = 310,949,290,020.26/612,879.13
  6. Step 6: Final answer
    x = 507,358.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.