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Finding the Fourth Proportional to 945,985.70, 1,416,904.95 and 821,569.70

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Solution

The fourth proportional to 945,985.70, 1,416,904.95 and 821,569.70 is: 1,230,553.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,985.70 : 1,416,904.95 = 821,569.70 : x
  2. Step 2: Convert to fraction form
    945,985.70/1,416,904.95 = 821,569.70/x
  3. Step 3: Cross multiply
    945,985.70x = 1,416,904.95 × 821,569.70
  4. Step 4: Simplify right side
    945,985.70x = 1,164,086,174,700.01
  5. Step 5: Solve for x
    x = 1,164,086,174,700.01/945,985.70
  6. Step 6: Final answer
    x = 1,230,553.67

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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.