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Finding the Fourth Proportional to 528,622.66, 729,167.47 and 313,610.50

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Solution

The fourth proportional to 528,622.66, 729,167.47 and 313,610.50 is: 432,585.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,622.66 : 729,167.47 = 313,610.50 : x
  2. Step 2: Convert to fraction form
    528,622.66/729,167.47 = 313,610.50/x
  3. Step 3: Cross multiply
    528,622.66x = 729,167.47 × 313,610.50
  4. Step 4: Simplify right side
    528,622.66x = 228,674,574,850.44
  5. Step 5: Solve for x
    x = 228,674,574,850.44/528,622.66
  6. Step 6: Final answer
    x = 432,585.65

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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.