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Finding the Fourth Proportional to 648,314.30, 971,305.05 and 555,002.30

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Solution

The fourth proportional to 648,314.30, 971,305.05 and 555,002.30 is: 831,504.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,314.30 : 971,305.05 = 555,002.30 : x
  2. Step 2: Convert to fraction form
    648,314.30/971,305.05 = 555,002.30/x
  3. Step 3: Cross multiply
    648,314.30x = 971,305.05 × 555,002.30
  4. Step 4: Simplify right side
    648,314.30x = 539,076,536,751.62
  5. Step 5: Solve for x
    x = 539,076,536,751.62/648,314.30
  6. Step 6: Final answer
    x = 831,504.93

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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.