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Finding the Fourth Proportional to 557,363.31, 769,135.63 and 315,647.62

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Solution

The fourth proportional to 557,363.31, 769,135.63 and 315,647.62 is: 435,579.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,363.31 : 769,135.63 = 315,647.62 : x
  2. Step 2: Convert to fraction form
    557,363.31/769,135.63 = 315,647.62/x
  3. Step 3: Cross multiply
    557,363.31x = 769,135.63 × 315,647.62
  4. Step 4: Simplify right side
    557,363.31x = 242,775,831,066.70
  5. Step 5: Solve for x
    x = 242,775,831,066.70/557,363.31
  6. Step 6: Final answer
    x = 435,579.14

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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.