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Finding the Fourth Proportional to 908,258.40, 1,361,804.40 and 375,991.20

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Solution

The fourth proportional to 908,258.40, 1,361,804.40 and 375,991.20 is: 563,745.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,258.40 : 1,361,804.40 = 375,991.20 : x
  2. Step 2: Convert to fraction form
    908,258.40/1,361,804.40 = 375,991.20/x
  3. Step 3: Cross multiply
    908,258.40x = 1,361,804.40 × 375,991.20
  4. Step 4: Simplify right side
    908,258.40x = 512,026,470,521.28
  5. Step 5: Solve for x
    x = 512,026,470,521.28/908,258.40
  6. Step 6: Final answer
    x = 563,745.37

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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.