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Finding the Fourth Proportional to 704,434.13, 972,119.09 and 402,634.61

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Solution

The fourth proportional to 704,434.13, 972,119.09 and 402,634.61 is: 555,635.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,434.13 : 972,119.09 = 402,634.61 : x
  2. Step 2: Convert to fraction form
    704,434.13/972,119.09 = 402,634.61/x
  3. Step 3: Cross multiply
    704,434.13x = 972,119.09 × 402,634.61
  4. Step 4: Simplify right side
    704,434.13x = 391,408,786,821.70
  5. Step 5: Solve for x
    x = 391,408,786,821.70/704,434.13
  6. Step 6: Final answer
    x = 555,635.75

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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.