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Finding the Fourth Proportional to 646,435.12, 968,330.76 and 526,918

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Solution

The fourth proportional to 646,435.12, 968,330.76 and 526,918 is: 789,299.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,435.12 : 968,330.76 = 526,918 : x
  2. Step 2: Convert to fraction form
    646,435.12/968,330.76 = 526,918/x
  3. Step 3: Cross multiply
    646,435.12x = 968,330.76 × 526,918
  4. Step 4: Simplify right side
    646,435.12x = 510,230,907,397.68
  5. Step 5: Solve for x
    x = 510,230,907,397.68/646,435.12
  6. Step 6: Final answer
    x = 789,299.49

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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.