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Finding the Fourth Proportional to 648,002.30, 972,003.45 and 603,715.55

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Solution

The fourth proportional to 648,002.30, 972,003.45 and 603,715.55 is: 905,573.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,002.30 : 972,003.45 = 603,715.55 : x
  2. Step 2: Convert to fraction form
    648,002.30/972,003.45 = 603,715.55/x
  3. Step 3: Cross multiply
    648,002.30x = 972,003.45 × 603,715.55
  4. Step 4: Simplify right side
    648,002.30x = 586,813,597,418.65
  5. Step 5: Solve for x
    x = 586,813,597,418.65/648,002.30
  6. Step 6: Final answer
    x = 905,573.33

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Double scale
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Similar ratio
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1.5x scale

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.