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Finding the Fourth Proportional to 646,874.40, 968,468.40 and 628,442.40

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Solution

The fourth proportional to 646,874.40, 968,468.40 and 628,442.40 is: 940,872.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,874.40 : 968,468.40 = 628,442.40 : x
  2. Step 2: Convert to fraction form
    646,874.40/968,468.40 = 628,442.40/x
  3. Step 3: Cross multiply
    646,874.40x = 968,468.40 × 628,442.40
  4. Step 4: Simplify right side
    646,874.40x = 608,626,605,620.16
  5. Step 5: Solve for x
    x = 608,626,605,620.16/646,874.40
  6. Step 6: Final answer
    x = 940,872.92

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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.