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Finding the Fourth Proportional to 648,007.80, 970,845.30 and 554,695.80

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Solution

The fourth proportional to 648,007.80, 970,845.30 and 554,695.80 is: 831,045.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,007.80 : 970,845.30 = 554,695.80 : x
  2. Step 2: Convert to fraction form
    648,007.80/970,845.30 = 554,695.80/x
  3. Step 3: Cross multiply
    648,007.80x = 970,845.30 × 554,695.80
  4. Step 4: Simplify right side
    648,007.80x = 538,523,810,359.74
  5. Step 5: Solve for x
    x = 538,523,810,359.74/648,007.80
  6. Step 6: Final answer
    x = 831,045.26

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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.