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Finding the Fourth Proportional to 909,615.96, 1,254,882.78 and 667,477.80

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Solution

The fourth proportional to 909,615.96, 1,254,882.78 and 667,477.80 is: 920,835.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,615.96 : 1,254,882.78 = 667,477.80 : x
  2. Step 2: Convert to fraction form
    909,615.96/1,254,882.78 = 667,477.80/x
  3. Step 3: Cross multiply
    909,615.96x = 1,254,882.78 × 667,477.80
  4. Step 4: Simplify right side
    909,615.96x = 837,606,397,252.28
  5. Step 5: Solve for x
    x = 837,606,397,252.28/909,615.96
  6. Step 6: Final answer
    x = 920,835.20

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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.