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Finding the Fourth Proportional to 627,656.20, 866,363.72 and 401,302.60

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Solution

The fourth proportional to 627,656.20, 866,363.72 and 401,302.60 is: 553,924.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,656.20 : 866,363.72 = 401,302.60 : x
  2. Step 2: Convert to fraction form
    627,656.20/866,363.72 = 401,302.60/x
  3. Step 3: Cross multiply
    627,656.20x = 866,363.72 × 401,302.60
  4. Step 4: Simplify right side
    627,656.20x = 347,674,013,381.67
  5. Step 5: Solve for x
    x = 347,674,013,381.67/627,656.20
  6. Step 6: Final answer
    x = 553,924.29

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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.