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Finding the Fourth Proportional to 659,676.70, 910,451.73 and 417,981.91

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Solution

The fourth proportional to 659,676.70, 910,451.73 and 417,981.91 is: 576,877.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,676.70 : 910,451.73 = 417,981.91 : x
  2. Step 2: Convert to fraction form
    659,676.70/910,451.73 = 417,981.91/x
  3. Step 3: Cross multiply
    659,676.70x = 910,451.73 × 417,981.91
  4. Step 4: Simplify right side
    659,676.70x = 380,552,353,068.20
  5. Step 5: Solve for x
    x = 380,552,353,068.20/659,676.70
  6. Step 6: Final answer
    x = 576,877.06

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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.