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Finding the Fourth Proportional to 753,455, 1,039,768.30 and 413,945.12

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Solution

The fourth proportional to 753,455, 1,039,768.30 and 413,945.12 is: 571,244.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,455 : 1,039,768.30 = 413,945.12 : x
  2. Step 2: Convert to fraction form
    753,455/1,039,768.30 = 413,945.12/x
  3. Step 3: Cross multiply
    753,455x = 1,039,768.30 × 413,945.12
  4. Step 4: Simplify right side
    753,455x = 430,407,013,715.70
  5. Step 5: Solve for x
    x = 430,407,013,715.70/753,455
  6. Step 6: Final answer
    x = 571,244.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.