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Finding the Fourth Proportional to 528,900.39, 729,779.90 and 314,107.83

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Solution

The fourth proportional to 528,900.39, 729,779.90 and 314,107.83 is: 433,407.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,900.39 : 729,779.90 = 314,107.83 : x
  2. Step 2: Convert to fraction form
    528,900.39/729,779.90 = 314,107.83/x
  3. Step 3: Cross multiply
    528,900.39x = 729,779.90 × 314,107.83
  4. Step 4: Simplify right side
    528,900.39x = 229,229,579,196.08
  5. Step 5: Solve for x
    x = 229,229,579,196.08/528,900.39
  6. Step 6: Final answer
    x = 433,407.85

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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.