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Finding the Fourth Proportional to 663,255.48, 915,032.70 and 408,163.80

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Solution

The fourth proportional to 663,255.48, 915,032.70 and 408,163.80 is: 563,106.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,255.48 : 915,032.70 = 408,163.80 : x
  2. Step 2: Convert to fraction form
    663,255.48/915,032.70 = 408,163.80/x
  3. Step 3: Cross multiply
    663,255.48x = 915,032.70 × 408,163.80
  4. Step 4: Simplify right side
    663,255.48x = 373,483,223,956.26
  5. Step 5: Solve for x
    x = 373,483,223,956.26/663,255.48
  6. Step 6: Final answer
    x = 563,106.13

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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.