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Finding the Fourth Proportional to 638,321.69, 957,295.70 and 525,722.63

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Solution

The fourth proportional to 638,321.69, 957,295.70 and 525,722.63 is: 788,430.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,321.69 : 957,295.70 = 525,722.63 : x
  2. Step 2: Convert to fraction form
    638,321.69/957,295.70 = 525,722.63/x
  3. Step 3: Cross multiply
    638,321.69x = 957,295.70 × 525,722.63
  4. Step 4: Simplify right side
    638,321.69x = 503,272,010,340.45
  5. Step 5: Solve for x
    x = 503,272,010,340.45/638,321.69
  6. Step 6: Final answer
    x = 788,430.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.