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Finding the Fourth Proportional to 528,576.94, 729,561.33 and 313,840.88

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Solution

The fourth proportional to 528,576.94, 729,561.33 and 313,840.88 is: 433,174.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,576.94 : 729,561.33 = 313,840.88 : x
  2. Step 2: Convert to fraction form
    528,576.94/729,561.33 = 313,840.88/x
  3. Step 3: Cross multiply
    528,576.94x = 729,561.33 × 313,840.88
  4. Step 4: Simplify right side
    528,576.94x = 228,966,168,909.22
  5. Step 5: Solve for x
    x = 228,966,168,909.22/528,576.94
  6. Step 6: Final answer
    x = 433,174.72

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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.