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Finding the Fourth Proportional to 648,861.72, 888,925.70 and 624,603.12

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Solution

The fourth proportional to 648,861.72, 888,925.70 and 624,603.12 is: 855,691.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,861.72 : 888,925.70 = 624,603.12 : x
  2. Step 2: Convert to fraction form
    648,861.72/888,925.70 = 624,603.12/x
  3. Step 3: Cross multiply
    648,861.72x = 888,925.70 × 624,603.12
  4. Step 4: Simplify right side
    648,861.72x = 555,225,765,668.18
  5. Step 5: Solve for x
    x = 555,225,765,668.18/648,861.72
  6. Step 6: Final answer
    x = 855,691.97

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.