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Finding the Fourth Proportional to 877,214.88, 1,314,762.03 and 427,261.50

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Solution

The fourth proportional to 877,214.88, 1,314,762.03 and 427,261.50 is: 640,375.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,214.88 : 1,314,762.03 = 427,261.50 : x
  2. Step 2: Convert to fraction form
    877,214.88/1,314,762.03 = 427,261.50/x
  3. Step 3: Cross multiply
    877,214.88x = 1,314,762.03 × 427,261.50
  4. Step 4: Simplify right side
    877,214.88x = 561,747,197,080.85
  5. Step 5: Solve for x
    x = 561,747,197,080.85/877,214.88
  6. Step 6: Final answer
    x = 640,375.82

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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.