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Finding the Fourth Proportional to 689,862.10, 952,123.53 and 403,327.30

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Solution

The fourth proportional to 689,862.10, 952,123.53 and 403,327.30 is: 556,658.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,862.10 : 952,123.53 = 403,327.30 : x
  2. Step 2: Convert to fraction form
    689,862.10/952,123.53 = 403,327.30/x
  3. Step 3: Cross multiply
    689,862.10x = 952,123.53 × 403,327.30
  4. Step 4: Simplify right side
    689,862.10x = 384,017,412,621.37
  5. Step 5: Solve for x
    x = 384,017,412,621.37/689,862.10
  6. Step 6: Final answer
    x = 556,658.23

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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.