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Finding the Fourth Proportional to 689,810.50, 951,918.98 and 383,882

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Solution

The fourth proportional to 689,810.50, 951,918.98 and 383,882 is: 529,746.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,810.50 : 951,918.98 = 383,882 : x
  2. Step 2: Convert to fraction form
    689,810.50/951,918.98 = 383,882/x
  3. Step 3: Cross multiply
    689,810.50x = 951,918.98 × 383,882
  4. Step 4: Simplify right side
    689,810.50x = 365,424,561,880.36
  5. Step 5: Solve for x
    x = 365,424,561,880.36/689,810.50
  6. Step 6: Final answer
    x = 529,746.30

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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.